Question

slove by cross multiplication method
$2x + y = 5 \\ 3x + 2y = 8$

Answer 1

Here we have
a1 = 2,b1 = 1 , c1 = 5
a2 = 3,b2 = 2,c3 = 8
By cross multiplication method
x/1×8 - 5×2 = -y/2×8 - 3×5 = 1/2×2 - 1×3
x/-2 = -y/1 = 1/1
x=2 and y=1