7x-2y/xy=5,8x+7y/xy=5
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7x-2y= 5xy ....1
&
8x+7y=5xy .....2
let equation 1 multiply with 8 and equation with 7
now
56x-16y = 40xy ...3
&
56x+49y=35xy ...4
subtract eqution 3 from 4
65y = - 5xy
so x = -13
& y = 13/9
&
8x+7y=5xy .....2
let equation 1 multiply with 8 and equation with 7
now
56x-16y = 40xy ...3
&
56x+49y=35xy ...4
subtract eqution 3 from 4
65y = - 5xy
so x = -13
& y = 13/9
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