1/x+3/y=5/2,2/x+2/y=3/2
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1/x + 3/y = 5/2
(y + 3x)/xy= 5/2
2(3x + y) = 5xy
6x + 2y = 5xy
6x + 2y - 5xy =0
2/x + 2/y = 3/2
(2x + 2y)/xy= 3/2
2(2x + 2y) = 3xy
4x + 4y = 3xy
4x + 4y - 3xy = 0
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