x-78+8x=111

Solution for x-78+8x=111 equation:

Simplifying
x + -78 + 8x = 111

Reorder the terms:
-78 + x + 8x = 111

Combine like terms: x + 8x = 9x
-78 + 9x = 111

Solving
-78 + 9x = 111

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '78' to each side of the equation.
-78 + 78 + 9x = 111 + 78

Combine like terms: -78 + 78 = 0
0 + 9x = 111 + 78
9x = 111 + 78

Combine like terms: 111 + 78 = 189
9x = 189

Divide each side by '9'.
x = 21

Simplifying
x = 21