Algebra

The problem is 9x+4y=-12
x=26-5y

Solve by substitution method

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asked by Vic
  1. Eq1: 9X + 4Y = -12.
    Eq2: X = 26 - 5Y.

    In Eq1, substitute 26 - 5Y for X:
    9(26-5Y) + 4Y = -12,
    234 - 45Y + 4Y = -12,
    -41Y = -12 -234 = -246,
    Y = 8.

    In Eq2, substitute 6 for Y:
    X = 26 - 5*6 = -4.

    Solution Set = (X,Y) = (-4,6).

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    posted by Henry

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