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31 December, 02:56

Y=5x+20

Y=-7x-16

Solve each system by substitution

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Answers (2)
  1. 31 December, 03:09
    0
    x=3

    y=35

    Step-by-step explanation:

    5x+20=-7x-16

    -16+20=4

    5x=-7x+4

    5x+7x = 12x

    12x=4

    12/4=3
  2. 31 December, 03:24
    0
    Answer: x = - 3; Y = 5

    Step-by-step explanation:

    Y=5x+20

    Y=-7x-16

    5x+20 = - 7x-16

    5x + 7x = - 16 - 20

    12x = - 36

    x = - 36 / 12

    x = - 3

    Y=5x+20

    Y = 5. (-3) + 20

    Y = - 15+20

    Y = 5
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