Question

Class 9th
Chapter 4 (Linear equation in two variables)

Answer 1

so equation=5x+15
let the two variable
so x and y
but we have already one variable
we let next variable=0y
we let be x=-3
5x-3+15=0
-15=-15
=1
5x-3+0y=15
-15+0y=15
so 0y=-15/15=-1