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24 April, 14:35

Solve the system by substitution.

y = - 2

10x + 2y = 40

+5
Answers (2)
  1. 24 April, 15:38
    0
    Solution: (4.4, - 2)

    x = 4.4 and y = - 2

    Step-by-step explanation:

    y = - 2

    10x + 2y = 40

    Plug in for y.

    10x + 2 * (-2) = 40

    10x - 4 = 40

    10x = 40 + 4

    10x = 44

    x = 44/10

    x = 22/5 or x = 4.4
  2. 24 April, 17:54
    0
    The answer would be 4.4
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