Question

Solve the equation 9x+4y=8,13x+7y=101

Answer 1

after multiplying eq.1 by 7 we get 63x+28y=56 and after multiplying eq.2 by 4 we get 52x+28y=404 after this subtract these equation then we have 11x= -348 I.e X= -3.16 then after putting the value of X in eq1 we get y=9.11