x-1=4x+x-8+3x
x-1=4x+x+3x-8 ( combine like terms)
x-1=5x+3x-8
x-1=8x-8
Move 8x to the other side
Sign changes from +8x to -8x
x-8x-1=8x-8x-8
x-8x-1=-8
-7x-1=-8
Move -1 to the other side
-7x-1+1=-8+1
-7x=-8+1
-7x=-7
divide by -7 to get x by itself
-7x/-7=-7/-7
Answer: x=1