4x+3y-4=0 ; 6x=8-5y – InterviewSolution

1.

4x+3y-4=0 ; 6x=8-5y

Answer»

4x + 3y = 4......(1)6x +5y = 8.......(2)

Multiply eq(1) by 3 and eq(2) by 2

12x + 9y = 12.....(3)12x + 10y = 16....(4)

Sub eq(4) from eq(3)y = 16 - 12 = 4

Now put value of y in eq(1)4x + 3*4 = 4x = (4 - 12)/4x = - 8/4 = - 2

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