math

x+5y= -3
3x-2y= 8
sovle using substituion

  1. 👍 0
  2. 👎 0
  3. 👁 285
  1. (1) x + 5y = -3
    (2) 3x - 2y = 8
    substitution method: we first choose one of the equation, and express one of the variables in terms of the other variable,, here let's choose equation (1), and express x in terms of y:
    x + 5y = -3
    x = -3 - 5y
    now, we substitute this to equation (2), and we solve for y:
    3x - 2y = 8
    3(-3 - 5y) - 2y = 8
    -9 - 15y -2y = 8
    -17y = 17
    y = -1
    substituting this back to either equations to get x (let's choose (1)):
    x = -3 - 5y
    x = -3 -5(-1)
    x = -3 + 5
    x = 2

    hope this helps~ :)

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Algebra22222!!!

    Choose the ordered pair that is a solution to the system of equations. 3x - y = 10 -x + y = -4 (3, -7) (-1, 3) (3, -1) (3, 1) Follow the example I gave in your previous question. I'm not going to do all of them. You want to

  2. Algebra

    sovle the compound inequality 8

  3. alg 2

    sovle for x: 4log33x=28. how do i do this....please help:(

  4. Math

    Can someone help me solve the following problems using the substituion method? I need to find the ordered pairs and I do not get it.... Here they are 1) 6m+n=47 m-4n=12 2) 6x+4y=-10 -7x+y=57 3) 5x+7y=43 -4x+y=25

  1. math

    Question: Find the given percent or fraction of the number. 14. 30% of 256 15. 25% of 2,048 16. 2/3 of 24 17. 5/6 of 90 How do i figure those out? I don't whant the answer I wanna know how to sovle them.

  2. Algebra

    What is the answer to 7x+2y=16 and -21x-6y=24 using the substituion method?

  3. Calculus

    integral of 2sin^3xcosx dx that is a sin cubed x. i think i use u-substituion, but im not quite sure how to do it. please help and thank you!

  4. Math

    Describe the sequence of transformations from quadrilateral ABCD to A'B'C'D A: -8,8 B: 8,-2 C: 4,-8 D: 4,-2 A': 2,-10 B': 8,-10 C': 2,-6 D: 8, -5 SOMEONE HELP ME SOVLE THIS PLEASE

  1. probability

    A box contains 4 purple and 9 yellow balls.We take out 2 balls (with replacement). What is the probability of drawing a second ball yellow, if the first ball was purple? please sovle in details..thanks

  2. Algebra PLEASE HELP

    Solve by substituion method 2r-5s=-12 5r+2s=57

  3. Algebra II

    Use direct substituion to evaluate the polynmial function for the given value of x f(x)=-3x^2+x^2-8x-2 f=2

  4. math (algerba 1)

    how would you sovle this? multiply: (a + 5) (a - 5)

You can view more similar questions or ask a new question.