1. Algebra PLEASE HELP!!

    What advantages does the method of substitution have over graphing for solving systems of equations? Choose the correct answer below. A. Graphing cannot be used to solve dependent or inconsistent systems due to the nature of the lines involved.

    asked by zwgz123 on December 15, 2017
  2. Linear Equations

    Can you please help solve this equation using the substitution method? I have tried and keep getting that X and Y = 7/2, but the answer in the book states no solution, inconsistent system. What am I doing wrong? Please help! Solve the systems of equations

    asked by Mia on March 2, 2010
  3. Substitution Method-Plz help

    Use the Substitution method to solve the system of equations. x + y = -4 x - y = 2 solve for x in the second equation. x= y+2 Put that in for x in the first equation: x+y=-4 (y+2) + y = -4 solve for y. Then, x= y+2 i don't get it.How did you get that?What

    asked by Svetlana on October 17, 2006
  4. Algebra 1

    bobpursey, In this problem you helped me with earlier: Solve using any appropriate method. y = 2× - 5, y = ½× + 1 Substitution, substitute for y. 2×-5=½ × + 1 3/2 x=6 x=4 y= 2*4-5=3 How did you choose which method you were going to use between

    asked by slomo on January 3, 2015
  5. Math

    17) solve this linear system using the method of substitution. 2y-x=-10 y= -3/2x-1 20) simplify then solve by substitution 2(x-4)+y=6 3x-2(y-3)=13 just need help with these 2.

    asked by Ma names Jeff on February 27, 2016
  6. math ALGEBRA

    Solve by either the substitution method or the addition or subtraction method 2m=n-3 3m=2n-9 Just replace n with (2m + 3) in the second equation. Then solve for m. Once you know the value of m, use either of your equations, such as n = 2m+3, to get n.

    asked by DANIELLE on December 21, 2006
  7. algebra

    Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution method. 5x+6y=5 x-9y=40 I always get these two confused... can someone please help me with these two problems?? I would really appreciate it..

    asked by Anonymous on November 11, 2009
  8. math

    Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution method. 5x+6y=5 x-9y=40 I always get these two confused... can someone please help me with these two problems?? I would really appreciate it..

    asked by Amanda on November 11, 2009
  9. math

    Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution method. 5x+6y=5 x-9y=40 I always get these two confused... can someone please help me with these two problems?? I would really appreciate it..

    asked by Amanda on November 11, 2009
  10. algebra

    Requesting help. (I must reckon, that X is a variable, and y is y-intercept) Q: Try to use the substitution method to solve the the linear system y=3x an y=3x-7. What do you notice? A) What happens when you graph it? B) Explain why there is no solution.

    asked by Michael on October 6, 2008
  11. Pre-Calc

    Solve the system of equations using either the substitution method or the multiplication/addition method answer: 3x+2y=14 2x-4y=4

    asked by Anonymous on September 27, 2014
  12. Algebra II

    How do you solve the linear equations x+y=5 3x-y=3 by use of the Substitution Method? (Please do not confuse with the Elimination Method)

    asked by Ashley on February 24, 2009
  13. College Algebra

    Solve for elimination method,substitution method and cramer's rule for 8x - 4y + 2z =16

    asked by MJ on September 1, 2016
  14. Math

    How do I solve these problems, I really need help. Solve by substitution method 6x+5y=17 x=53-8y Solve by elimination method 2x+3y=5 4x+6y=10

    asked by Amy on October 17, 2008
  15. Algebra 1 HELP PLZ!!!

    Use the Substitution method to solve the system of equations. x + y = -4 x - y = 2 PLz HELP!! I'M NOT BOB BUT I CAN HELP ITS REALLY SIMPLE ALGEBRA X + Y = -4......EQN 1 X - Y = 2.....EQN 2 From EQN 2, let x = 2 + y Substitute that into EQN 1 x - y = -4

    asked by Margie on November 2, 2006
  16. Math

    1. Explain the advantages and disadvantages of both the substitution method and the elimination method for solving a system. Help please. The only reasons I can think of is because in substitution it might be more difficult cause there's a possibility of

    asked by Amanda on February 18, 2008
  17. Math

    I need help,my example: The sales representative say there are two floor plans available 56 total houses. Use x for floor plan 1 and y for floor plan 2 then write an equation that illistrates the situation. So I thought x+y=56, then sales rep. says there

    asked by dee on November 27, 2009
  18. math

    Solve by substitution method 9x+6y=21-9x+y=35 What is the solution of the method?

    asked by micheal on June 16, 2009
  19. math

    Can someone please check my work? Solve using substitution method 1. 3x+2y=12 x=52-6y answer:-40.8 I am pretty sure that one is wrong. Solve using elimination method 2. 2r-7s=-31 7r+2s=24 answer: (230/53,-468/53) 3.3x+4y=3 6x+8y=6 answer: No answer.

    asked by deedee on January 6, 2009
  20. Math

    I still don't know how to directly solve this problem. Can someone guide to solve this system of equation by using the substitution method? Thanks! 1. Y=6x-5 Y=-x+9

    asked by Anonymous on January 29, 2014
  21. college algebra

    please solve by method of substitution 0.3x-0.4y-0.33=0 0.1x + 0.2y -.21=0 please give all steps to solve.I think I understand the basic concept but this is little more complicated for me. Thanks in advance

    asked by Nadia on November 24, 2009
  22. CALC 2 - Partial Functions!!

    How do I solve Integral of 7/(16-x^2) I know I must break down (16-x^2) into (x+4)(-x+4), but after I do that what is next? Using the method of partial fractions, convince yourself that 7/(16-x^2)= (7/8)*[1/(4+x) + 1/(4-x)] The two additive terms can be

    asked by Ace on June 13, 2007
  23. algebra

    use the Substitution Method. Please give it a try. y = 3x + 4 5x + 3y = 12 Why is the substitution method preferred in this case?

    asked by Maya on April 5, 2011
  24. math substitution method

    use the substitution method to solve 7x+5y=-26 x=28-6y

    asked by KiKi on March 28, 2010
  25. math help quick please

    solve {y=x-7 {5x+2y=7 Use the substitution method. A.(0, −7) B.(7, 0) C.(3, −4) D.(−1, −8)

    asked by lily on February 6, 2017
  26. algebra

    x+3y=-10 7x-5y=34 solve using substitution method

    asked by Anonymous on November 29, 2009
  27. Algebra

    Use the method of substitution to solve this: 9x+4y=9/2 and y=2x-1

    asked by Amy on January 14, 2016
  28. algebra

    how do you solve by substitution method: 2x+2y+2=-18+6y-8?

    asked by Carolyn on April 3, 2010
  29. Math

    Using the Substitution method solve 7x+5y=-23 -6x+y=25

    asked by Bryant on March 21, 2010
  30. math

    Solve by substitution method: 3x+8y=33 x=31-6y

    asked by anonymous on October 27, 2010
  31. algebra

    solve by substitution method: 9x+7y=4 x=23-4y

    asked by Terri on November 24, 2009
  32. Algebra

    Solve using substitution method 3x+8y=20 x=24-7y

    asked by Brandy on August 10, 2013
  33. Algebra

    Solve by using substitution method. 1. y=3x-2, x=4

    asked by Brittany on January 22, 2009
  34. math problem

    solve by substitution method 7x+8y=44 x=41-5y

    asked by Lavern on January 19, 2012
  35. Algebra

    How would you solve this using substitution method y= 3 + x 2x + y = 8

    asked by Donna on February 16, 2011
  36. math

    Solve. y=x−8 2x+3y=1 use the substitution method. (4, −4) (5, −3) (2, −6) (0, −8)

    asked by Jay on February 9, 2017
  37. Pre-Calculus

    Use substitution method to solve. (1/2x)+(3/4y)=(-1/4) and (3/4x)-(1/4y)=1 Can you please help?

    asked by Anonymous on January 22, 2013
  38. Math question

    Please help me to solve by substitution method. 7x+8y =44 x=41-5y

    asked by DJ on January 20, 2012
  39. Math

    Solve using substitution method 2x-7y=-6 x=5y

    asked by Tyler on October 1, 2009
  40. Algebra

    4x+y=42 6x-5y=50 Solve using the substitution method.

    asked by Jamie on February 1, 2013
  41. math

    8m+n=12 m-5n=22 solve using substitution method

    asked by Anonymous on June 30, 2010
  42. Algebra

    Solve using the substitution method. 0.3x+0.2y=5,0.5x+0.4y=11

    asked by sherry on March 22, 2012
  43. algebra

    how do you use the substitution method to solve x + y =2 y = -2x

    asked by Jessi on April 29, 2011
  44. alg math 116

    9x +3y=-51,-5x +y=39 solve using substitution method

    asked by Juan on February 1, 2010
  45. algebra

    Solve by the substitution method. 2x+7y=16 x=22-7y

    asked by Christina on August 13, 2012
  46. Algebra

    solve using substitution method: 4x+5y=21 x=48-6y

    asked by Regina on October 25, 2015
  47. college of the redwoods

    x+9y=-42 3x+8y=-50 solve using the substitution method.

    asked by paulette on November 9, 2015
  48. math

    solve using the substitution method: 8x+5y=-12 x=12-4y

    asked by josh on April 17, 2011
  49. Math 116

    Solve by the substitution method. 3x+8y=57 x=67-8y

    asked by Rick on August 14, 2010
  50. Algebra 1

    solve by the substitution method. 5x+9y=53 x=47-7y

    asked by Anonymous on May 1, 2011
  51. Algebra

    x-2y=.9 4x-3y=13.1 Solve using the substitution method.

    asked by Jamie on February 1, 2013
  52. math - algebra

    how would i solve this using the substitution method 3y=11-x 3x-y=3 thanks

    asked by paul on November 14, 2010
  53. college algerba

    Solve by the substitution method: 2x - 3y = 7 y = 3x - 7

    asked by Sammy on March 30, 2008
  54. Algebra Help!!

    solve using the substitution method. y= 5 - 3x 4x + y= 7

    asked by slomo on January 11, 2015
  55. Math/116 week seven

    solve by the substitution method. 2m+n=1 m-9n=10

    asked by Renee on March 4, 2012
  56. Please help quick! Maths

    Use substitution method to solve x-2y-5=0, 3x-5y=8

    asked by Jeconiah on August 26, 2012
  57. math

    SOLVE USING SUBSTITUTION METHOD X+2Y =1 8X +6Y + 4

    asked by HELEN on March 13, 2010
  58. math

    1) 6m+n=47 m-4n=12 can someone help me solve using substitution method?

    asked by Kristin on March 13, 2010
  59. Math

    How do I solve this using substitution method? 7x+9y=-38 -6x+y=50

    asked by Edith on February 11, 2012
  60. Algebra

    Use the substitution method to solve -x + 3y=24 5x +8y=-5

    asked by Jake on March 23, 2012
  61. College Algebra

    solve by the the substitution method 8x+9y=-39

    asked by Tiffany on February 2, 2014
  62. Algebra

    Please solve using substitution method. 2n-11=m/4 n=m/-3

    asked by Emily on January 29, 2015
  63. algebra

    using the substitution method how do you solve y=-1/3x y+2x=5

    asked by renee on April 13, 2011
  64. Pre Calc

    x^2+y=9, x-y+3=0. Need to solve using substitution method.

    asked by Keith on May 18, 2010
  65. math

    solve by substitution method: 8x-3y=-94 2x+22=y

    asked by Ralph on July 24, 2011
  66. math

    solve by substitution method x^2=y^2+39 x-y=3

    asked by sue on February 25, 2009
  67. math-need fast

    solve by substitution method x^2=y^2+39 x-y=3

    asked by anonymous on February 26, 2009
  68. Algebra

    solve using substitution method 3x-5y=61 3x-y=17

    asked by Laura on January 25, 2011
  69. substitution

    solve by the substitution method 3x+5y=21 x=51-9y

    asked by Sam on October 12, 2010
  70. Math

    How do I solve this using the substitution method? x+3y=8 3x-2y=2

    asked by Anonymous on May 30, 2015
  71. algebra

    solve by the substitution method. 6x+3y=-21 -4x+y=41

    asked by kim on February 24, 2012
  72. Algebra

    If 2x + 2y = 20 & 5x - 3y = 15 Solve using the substitution method.

    asked by Jamie on June 20, 2015
  73. Math

    solve by the substitution method 7x+4y=14, x=47-7y please help

    asked by Krista on May 16, 2010
  74. paste

    solve by the substitution method 3x+5y=21 x=51-9y

    asked by William Tolson on October 12, 2010
  75. algebra

    Solve using the substitution method 6x-3y=18, 6x+3y=-12

    asked by sharday on February 23, 2012
  76. substitution

    solve by the substitution method 3x+5y=21 x=51-9y

    asked by Sam on October 12, 2010
  77. Pre Calc

    x^2+y=9, x-y+3=0. Need to solve using substitution method.

    asked by Keith on May 18, 2010
  78. Algebra

    solve by substitution method y=x-4 6x-9y=21

    asked by Anonymous on April 24, 2010
  79. Math

    Solve using the substitution method -x-3y=-20 5x+3y=40

    asked by Chrissy on January 11, 2012
  80. algebra

    solve by substitution method 9x+7y=-23 x=48-8y

    asked by anonymous ally on April 23, 2010
  81. math

    solve by the substitution method 5x+7y=6 -6x+y=21

    asked by Jennifer on July 26, 2011
  82. college algerba

    Solve by the substitution method:

    asked by Sammy on March 30, 2008
  83. substitution method

    Solve by substitution method please help me solve this. I do not know how to do this at all. The question is 3x+8y=33 and x=31-6y I know that I have to plug x into the first x like 3(31-6y)+ 8y = 33 but i do not know what to do from there.

    asked by anonymous on October 27, 2010
  84. algebra

    i need help with these problems (either a solution or how to plug them into a graphing calculator): 1) Solve by substitution or elimination 4/x + 1/y + 2/z = 4 2/x + 3/y - 1/z = 1 1/x + 1/y + 1/z = 4 2)Solve the system of equations by substitution. x^2 +

    asked by Alyssa on April 5, 2011
  85. math

    Solve using the substitution method: 7x+2y=-37 and -5x+y=44 what are the solutions?

    asked by tera on February 10, 2009
  86. cant figure out

    Solve by the substitution method. 7x+3y=1 AND -4X+Y=13 What is the solution.

    asked by tera on February 10, 2009
  87. math

    1/4v=5 Use the substitution method to solve this problem.

    asked by Janey on May 1, 2013
  88. Math 208

    Solve each system by the substitution method. x+3y=2 -x+y=1

    asked by Jodie on January 6, 2011
  89. algebra

    Solve the given system by the substitution method. 2x+y=6, 5x-2y=6

    asked by angela on July 14, 2013
  90. Math

    How would you solve each system by the substitution method? 1. Y=6x-5 Y=-x+9

    asked by Anonymous on January 29, 2014
  91. algebra

    Solve using the substitution method. -8x + y = 18 9x + 13y = 8

    asked by Anonymous on January 13, 2015
  92. maths

    solve using substitution& elimination method 2x/5+3y/4=5;3x/10+5y/8=8

    asked by nandhini on December 15, 2015
  93. algebra

    Solve the given system by the substitution method. 3x + y = 17 5x -2y = 10

    asked by Anonymous on January 13, 2015
  94. algebra

    solve for x using the substitution method -8x + y = 18, 9x + 13y = 8

    asked by Anonymous on January 13, 2015
  95. Algebra 2

    Solve the system by the substitution method. 5x+7y=-18 y=5x-14

    asked by saRa on November 4, 2009
  96. Algebra Help Please

    solve using the substitution method. -8x + y = 18 9x + 13y = 8

    asked by slomo on January 11, 2015
  97. Algebra Help!!

    Solve the given system by the substitution method. 3x + y = 17 5x -2y = 10

    asked by slomo on January 11, 2015
  98. math

    solve the equation in substitution method 2m+n=0 m+2n=3

    asked by damola on May 4, 2017
  99. math

    Solve the following system using the substitution method: y = 3x - 9 y = -x - 1

    asked by hunter on July 3, 2013
  100. algebra

    solve by the substitution method 9x + 5y = -25 x = 7 - 3y Could someone help with steps here also?

    asked by algebra yuck on September 12, 2009