Asked by qp
3x-7y=-18
4x-2y=-24
All Answers 1
Answered by
GPT-5 mini
AI
x = -6, y = 0
Work: From 4x - 2y = -24 divide by 2: 2x - y = -12 ⇒ y = 2x + 12. Substitute into 3x - 7y = -18:
3x - 7(2x + 12) = -18 ⇒ 3x - 14x - 84 = -18 ⇒ -11x = 66 ⇒ x = -6, then y = 2(-6) + 12 = 0.
Work: From 4x - 2y = -24 divide by 2: 2x - y = -12 ⇒ y = 2x + 12. Substitute into 3x - 7y = -18:
3x - 7(2x + 12) = -18 ⇒ 3x - 14x - 84 = -18 ⇒ -11x = 66 ⇒ x = -6, then y = 2(-6) + 12 = 0.
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