Question

Solve by substitution ax-by=0 and ab^2x+a^2by-(a^2+b^2)=0

Answer 1

Given :          ax - by = 0 ======> 1

                     $ab^2x + a^2by - (a^2 + b^2 ) = 0$ ========> 2

               1 ⇒ x = by/a ===> 3

                3 in 2 ⇒   $ab^2 (by/a) + a^2by - (a^2 + b^2) = 0$