Elimination Method...

posted by .

Solve by eliminatin method.

2r-5s= -11
5r+2s= 16

  • Elimination Method... -

    2r-5s= -11 times 5 is 10r-25s= -55
    5r+2s= +16 times 2 is 10r+ 4s= +32
    ----------------------------------
    **********subtract*****0r -29s=-87
    s = 87/29

    2r -5(87/29) = -11
    2 r - 435/29 = -11
    2 r = (-319+435)/29
    2 r = 116/29
    r = 58/29

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    Solve by eliminnation methods 2x-4y=5 2x-4y=6 solve the system by elimination method 5x+2y= -13 7x-3y=17 Solve x+6<-7 or x+6>4 Determine whether the given numbers are solutions of the inequality 8,-10,-18,-3 y-8>2y-3 Solve …
  2. Algebra

    Solving system of linear equations by using the apropiate method name the method and the x,y coordinates 1)X=4y+8 2x-8y=-3 2)3x-7y=6 elimination method 2x+7y=4 (2,0) 3)5x-2y=12 elimination method 3x-2y=-2 (7,23/2) 4)9x-8y=42 elimination …
  3. math elimination method

    elimination method really confuses me. solve by elimination method 5r -3s = 17 3r + 5s =17 A. solution is ______ (ordered pair, integer or fraction) B. Infinitely many C. No Solution
  4. Elimination Method Help

    solve by the elimination method 5x+5y= -7 7x-3y=19 The solution is (___,___) Please help I am lost on how to work and complete this one.
  5. Algebra

    Solve by elimination method. 7r-3s=14 3r+7s=64 Could never figure out the elimination method. Would love some help with this one. Thanks
  6. Algebra/Elimination method

    Solve using the elimination method. If the system has no solution or an infinite number of solutions, state this. -27x - 18y = -180 9x + 6y = 60
  7. algebra

    1 Solve the set of linear equations by the matrix method : a+3b+2c=3 , 2a-b-3c= -8, 5a+2b+c=9. Sove for a 2 4 7 3 2 Solve the set of linear equations by Guassian elimination method : a+2b+3c=5, 3a-b+2c=8, 4a-6b-4c=-2. Find a 1 4 5 …
  8. math

    Please solve the system with the elimination method. Explain each step as it is performed. 5y = x 2x - 3y = 7 Would the elimination method have been your first choice to solve this problem?
  9. 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 …
  10. maths

    1.solve the set of linear equation by matrix method.a+3b+2c=3,2a-b-3c=-8,5a+2b+c=9 solve for a,b,c 2.solve by Guassian elimination method, (a)a+2b+3c=5,3a-b+2c=8,4a-6b-4c=-2, (b)

More Similar Questions