Respuesta :

-12=3x+3 first step is to get rid of the three so subtract three from both sides
-15 =3x next isolate the the x by dividing both sides by 3
-5=x and you have your answer
I hope this helped
-12= 3x+3
-3 -3
-15=3x
÷3 ÷ 3
x=-5