cross multiplication 3x+4y=10 , 2x-2y=2
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Answer:
3x+4y=10/2x-2y=2
(3x+4y)2=10(2x-2y)
6x+8y = 20x-20y
8y+20y = 20x+6x
28y = 26x
xy = 26/28
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