Question

Solve the equation 18 = 3 + 5x for x.

Answer 1

X = 3

Explanation:

18 - 3 = 15 and 3 x 5 = 15. However there is a way to check which would be doing 5 x 1 + 3 and 5 x 2 + 3 and so on and so on until you find your answer.

Answer 2

`18 = 3 + 5x \\ 5x = 18 - 3 \\ 5x = 15 \\ x = 3`