Question

How do you solve `50x - 40 x = 40`?

Answer 1

`x = 4`.

Explanation:

You can simply the terms with `x` : `50x - 40x = 10x`. So `50x - 40x = 40 iff 10x = 40`.

You then divide both sides by 10 in order to isolate x.

`10x = 40 iff x = 40/10 = 4`