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Question

Solve for  x and y:

2x3y=9,3x+7y=2  (y0).


Solution

the equation

2x-3/y=9 -------(1)

and eq.

3x+7/y=2 ------(2)

now multiply eqn (1) by 3 and eqn (2) by 2, and then subtracting we get ;

-23 = 23y

so y= -1 and x=3

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