Question

What is x in 3x+3= -2x-12

Answer 1

$3x+3=-2x-12 \\ 3x+2x=-12-3 \\ 5x=-15 \\ x=-3 \\ \\ \text{The answer is x=-3 ;)}$

Answer 2

$3x+3=-2x-12$
Add 2x
$3x+3+2x=-12$
$5x+3=-12$
Subtract 3
$5x=-12-3$
$5x=-15$
Divide by 5
$x= \frac{-15}{5}$
$x=-3$
The answer is: -3