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Mathematics, 21.06.2020 23:57 indiaseel5940

If x + y ≥ a, x - y ≤ -1, and the minimum value of z = x + ay = 7, what is a?

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If x + y ≥ a, x - y ≤ -1, and the minimum value of z = x + ay = 7, what is a?...
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