6+6=x-1

Solution for 6+6=x-1 equation:

Simplifying
6 + 6 = x + -1

Combine like terms: 6 + 6 = 12
12 = x + -1

Reorder the terms:
12 = -1 + x

Solving
12 = -1 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
12 + -1x = -1 + x + -1x

Combine like terms: x + -1x = 0
12 + -1x = -1 + 0
12 + -1x = -1

Add '-12' to each side of the equation.
12 + -12 + -1x = -1 + -12

Combine like terms: 12 + -12 = 0
0 + -1x = -1 + -12
-1x = -1 + -12

Combine like terms: -1 + -12 = -13
-1x = -13

Divide each side by '-1'.
x = 13

Simplifying
x = 13