Answer :

luana
-7x-3x+2=-8x-8      | combine like terms
-10x+2=-8x-8         | add 8x
-2x+2=-8               | subtract 2
-2x=-10                 | divide by -2
x=5

jpmg2k
-7x-3x+2=-8x-8
-7x-3x=-10x
-10x+2=-8x-8
-10x+8x=-2x
-8-2=-10
-2x=-10
-10/-2=5
x=5