13-(-g)=42

Solution for 13-(-g)=42 equation:

Simplifying
13 + -1(-1g) = 42

Remove parenthesis around (-1g)
13 + -1 * -1g = 42

Multiply -1 * -1
13 + 1g = 42

Solving
13 + 1g = 42

Solving for variable 'g'.

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

Add '-13' to each side of the equation.
13 + -13 + 1g = 42 + -13

Combine like terms: 13 + -13 = 0
0 + 1g = 42 + -13
1g = 42 + -13

Combine like terms: 42 + -13 = 29
1g = 29

Divide each side by '1'.
g = 29

Simplifying
g = 29