Question

How do you solve `xy - 3x = 40`; `x= 5`?

Answer 1

`y =11`

Explanation:

`xy - 3x = 40` ----- equation (1)

Given `x = 5`

Substituting the value of `x` in equation (1):

`5 xx y - 3 xx 5 = 40`

`=> 5y - 15 = 40`

`=> 5y = 40 +15 = 55`

`=> 5y =55`

`=> y = 55/5`

`therefore y = 11`