Question

How do you solve `x=11+2y` and `7x+2y=13` using substitution?

Answer 1

`x=3 ; y= -4`

Explanation:

Substituting `x=11+2y` on equation we get `7(11+2y)+2y=13 or 14y+2y=13-77 or 16y =-64 or y= -4`; Putting y=-4 we get `x=11+2*(-4)=3`[Ans]