12x+8-3x=-1

This is a multi-step equation

x=-1

Step-by-step explanation:

12x+8-3x=-1, First add like terms.

12x-3x=9x

9x+8=-1, Next you need to get rid of + 8 so you need to do - 8.

9x=-9, Next divide the 9x to get x by itself.

x=-1

12x+8-3x=1

9x=-7

x = - 7/9