please solve this using linear equations in two variables
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7x+7y = XY........(I)
2x-3y = -xy,...,....(ii)
multiply equation (I) by 2 and equation (ii) by 7, then we get,
14x+14y = 14xy
14x-21y = -7xy
eliminating the above equations
35y = 21xy
x= 35/21 or 5/3
now substitute the value of x in any equation,
you'll get the answer.
2x-3y = -xy,...,....(ii)
multiply equation (I) by 2 and equation (ii) by 7, then we get,
14x+14y = 14xy
14x-21y = -7xy
eliminating the above equations
35y = 21xy
x= 35/21 or 5/3
now substitute the value of x in any equation,
you'll get the answer.
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