Question 722879
Here is a step by step so you can go back to it and see what you should do again with a problem like this. Hope that it helps you out

 -5x+8+2x=-(4-x)

    -3x+8=-(4-x)               [1. Add like terms together]

    -3x+8=-4+x                 [2. distribute the -1 into (4-x)]

    -3x+8=-4+x                 [3. Move the x to the other side, making it negative.Then the 8 to the other side as well, which makes it negative too.]
    -x -8=-8-x                    
      -4x=-12                  [4. Divide -4 on both sides.]
       -4  -4
        x=3                    [5. Answer.]