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Mathematics, 21.02.2022 23:50 alexbrafford

2x + 3y = 7 and 2x^2 + xy - 3y^2 = 28, then 1/2x - 1/2y =

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2x + 3y = 7 and 2x^2 + xy - 3y^2 = 28, then 1/2x - 1/2y =...
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