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26 August, 07:40

Solve the system of equations using substitution. Show your work.

3x + 2y = 7

y = x - 4

+3
Answers (2)
  1. 26 August, 07:43
    0
    x = 3

    y = - 1

    Step-by-step explanation:

    Finding X

    Substitute y into the 1st equation

    3x + 2 (x-8) = 7

    Simplify

    3x + 2x-8 = 7

    Combine like terms

    5x - 8 = 7

    Move the constant (-8) to the right

    5x = 7 + 8

    Simplify

    5x = 15

    Divide both sides by 5

    x = 3

    Finding Y

    Now since you know x is 3 substitute that into the 2nd equation

    y = 3 - 4

    y = - 1
  2. 26 August, 07:59
    0
    X=3

    Y=-1 ...
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