Solve.

{y=x-7

{5x+2y=7

Use the substitution method.

A. (-1, - 8)

B. (0, - 7)

C. (7, 0)

D. (3, - 4)

3 (2x + 12) = - 2 (x - 4) + x

Subracting mixed numbers 9 2/6 - 6 5/6 =

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