Answer:
Explanation:
Put x = -1 to the equation -2x + 7y = -54
(-2)(-1) + 7y = -54
2 + 7y = -54 subtract 2 from both sides
7y = -56 divide both sides by 7
y = -8
-2(-1) + 7y = -54
2 + 7y = -54
7y = -56
When x = -1, y = -8.
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