7x+6+6x=123

Solution for 7x+6+6x=123 equation:

Simplifying
7x + 6 + 6x = 123

Reorder the terms:
6 + 7x + 6x = 123

Combine like terms: 7x + 6x = 13x
6 + 13x = 123

Solving
6 + 13x = 123

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + 13x = 123 + -6

Combine like terms: 6 + -6 = 0
0 + 13x = 123 + -6
13x = 123 + -6

Combine like terms: 123 + -6 = 117
13x = 117

Divide each side by '13'.
x = 9

Simplifying
x = 9