Question

3x-5y-4=0 and 9x=2y+7 elimination and sublimation method​

Answer 1

3x+5y-4=0

9x-2y-7=0

a1=3;b1=5;c1=-4

a2=9;b2=-2;c2=-7

a1/a2=b1/b2=c1/c2

3/9=-5/2=4/7

therefore,a1/a2 is not equal to b1/b2

hence,this case has unique solution