Answer :

vanesha376

Step-by-step explanation:

y = -x + 4

2x + 2y = 8

Substitution y

2x + 2y = 8

2x + 2(-x + 4) = 8

2x + (-2x) + 8 = 8

2x - 2x = 8 - 8

0 = 0

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