First to figure out the problem you need to distribute the 3 and the 4. You get, 3x-3-8=4+4x+5. Now you need to combine the coefficients. After doing this you will have 3x-11=9+4x. Now to get x by itself you need to subtract 3x from both sides. You will have -11=9+x. Then you subtract 9 from both sides and you end up with x=-20
3(x-1)-8=4(1+x)+5
3x-3-8= 4+4x+5
3x-11=9+4x
-3x -3x
-11=9+x
-9 -9
-20=x
