4/x + 3/y=2 eq------1
and 8/x - 9/y=7 eq----------2
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12/x+9/y=6
8/x-9/y=7
20/x=13
x=20/13
4/x+3/y=2
13/5+3/y=2
3/y=-3/5
y=-5
8/x-9/y=7
20/x=13
x=20/13
4/x+3/y=2
13/5+3/y=2
3/y=-3/5
y=-5
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