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31 August, 03:22

Solve using substitution.

8x + 5y = 4

x = 3

What is x and y?

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Answers (2)
  1. 31 August, 04:09
    0
    Answer: y=-4

    Step-by-step explanation:

    8 (3) + 5y=4

    24+5y=4

    subtract each side by 24

    5y=-20

    divide by 5

    5 y=-4
  2. 31 August, 04:19
    0
    Answer: x = 3 : y = - 4

    Step-by-step explanation:

    8x + 5y = 4

    8 (3) + 5y = 4

    5y = 4 - 8 (3)

    5y = 4 - 24

    5y = - 20

    (5y) / 5 = - 20/5

    y = - 4
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