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30 April, 16:13

X=y-1

X+2y=8

Solve each system by substituation

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Answers (2)
  1. 30 April, 16:16
    0
    The answer is

    y=3

    x=2

    Also, substitution is just a type of method to solve for x and y.

    Tell me if you want the steps for solving it
  2. 30 April, 16:27
    0
    Since the first equation is already set up as x = use it to plug into the second equation.

    x + 2y = 8

    (y - 1) + 2y = 8

    y - 1 + 2y = 8

    3y - 1 = 8

    Add 1 to both sides

    3y = 9

    Divide both sides by 3

    y = 3

    Use x = y - 1 to solve for x

    x = 3 - 1

    x = 2

    (2,3)
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