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11 April, 21:42

X=3y+4

3x-5y=8

Solve using substitution

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Answers (1)
  1. 11 April, 23:31
    0
    x = 3y + 4

    3x - 5y = 8

    Because we have a value for x, we can plug it into the second equation to solve for y.

    3 (3y + 4) - 5y = 8

    9y + 12 - 5y = 8

    Combine like terms.

    4y + 12 = 8

    Subtract 12 from both sides.

    4y = - 4

    Divide both sides by 4.

    y = - 1

    Because we have a constant value for y, we can solve for x.

    x = 3 (-1) + 4

    x = - 3 + 4

    x = 1

    The value of x is equal to 1. The value of y is equal to - 1.
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