algebra

Solve by the substitution method.

2x+7y=16
x=22-7y

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  1. 2x+7y=16
    plug 22-7y for x
    so
    2(22-7y) + 7y=16
    44-14y+7y=16
    -7y= -44+16
    -7y=-28
    so y= 4

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