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16 February, 17:50

Solve the following system using the substitution method.

9x + 8y = 15

-5x + 12y = - 107

(x, y) = (,)

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  1. 16 February, 19:20
    0
    X = (15 - 8y) / 9

    -5[ (15 - 8y) / 9] + 12y = - 107

    (-75/9) + (40/9) + 12y = - 107

    y = - 8.59

    x = [15 - 8 (-8.59) ]/9

    x = 9.3

    (x, y) = (9.3, - 8.59)
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