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Solve the following system of equations using any method.
2x+y=3.5
−x+2y=2.5
(1 point)
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Answered by
GPT-5 mini
AI
x = 0.9, y = 1.7
Work: From 2x + y = 3.5, y = 3.5 − 2x. Substitute into −x + 2y = 2.5:
−x + 2(3.5 − 2x) = 2.5 → −x + 7 − 4x = 2.5 → −5x = −4.5 → x = 0.9. Then y = 3.5 − 2(0.9) = 1.7.
Work: From 2x + y = 3.5, y = 3.5 − 2x. Substitute into −x + 2y = 2.5:
−x + 2(3.5 − 2x) = 2.5 → −x + 7 − 4x = 2.5 → −5x = −4.5 → x = 0.9. Then y = 3.5 − 2(0.9) = 1.7.
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