If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-x-8=31
We move all terms to the left:
-x-8-(31)=0
We add all the numbers together, and all the variables
-1x-39=0
We move all terms containing x to the left, all other terms to the right
-x=39
x=39/-1
x=-39
| 13x+41=4x=5 | | -3(6n+10)=4(-5-7) | | x+4+68=180 | | 8x-2=15x-23 | | 6-x=5x+30. | | 2x+10=-4x-15 | | 2.39+3h=11.39 | | x-3/9=18/6 | | 2x+3-x=5x+7 | | 4(s+15)=0 | | 2x+42=9x+38 | | 12x+90x-14=17(6x+14) | | 4n+25=3n+15 | | 5x+20=5(x+ | | x+4-68=180 | | 5x=3200 | | 4/20=6/t | | -5n-22=23 | | g/3=4.33 | | 1/3x+8=1/2x+6 | | 35x+3.25(3)=16.5 | | 2/8=x/80 | | -1b=40 | | 0.2(6x+30)=1.2(x+5) | | k/7=20/56 | | 13.44=p-1.38 | | 109=5(x-8)-(x+3) | | 3*(x+6)=2x+18 | | 9.9=d/4.4+11 | | 9-6(x)=-15 | | -m+8+7m+3=4+m-3 | | 109=5(x-8)-x+3) |