Question

X = 5 - y. Substitute 5 - y for c in the equation below. 2x + 3y = 12
2 (. ) + 3y = 12

Answer 1

$2x + 3y = 12 \\ 2(5 - y) + 3y = 12 \\ 10 - 2y + 3y = 12 \\ 10 + y = 12 \\ y = 12 - 10 \\ y = 2$
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