-(x+13)=123

Solution for -(x+13)=123 equation:

Simplifying
-1(x + 13) = 123

Reorder the terms:
-1(13 + x) = 123
(13 * -1 + x * -1) = 123
(-13 + -1x) = 123

Solving
-13 + -1x = 123

Solving for variable 'x'.

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

Add '13' to each side of the equation.
-13 + 13 + -1x = 123 + 13

Combine like terms: -13 + 13 = 0
0 + -1x = 123 + 13
-1x = 123 + 13

Combine like terms: 123 + 13 = 136
-1x = 136

Divide each side by '-1'.
x = -136

Simplifying
x = -136