-42=2(g-99)

Solution for -42=2(g-99) equation:

Simplifying
-42 = 2(g + -99)

Reorder the terms:
-42 = 2(-99 + g)
-42 = (-99 * 2 + g * 2)
-42 = (-198 + 2g)

Solving
-42 = -198 + 2g

Solving for variable 'g'.

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

Add '-2g' to each side of the equation.
-42 + -2g = -198 + 2g + -2g

Combine like terms: 2g + -2g = 0
-42 + -2g = -198 + 0
-42 + -2g = -198

Add '42' to each side of the equation.
-42 + 42 + -2g = -198 + 42

Combine like terms: -42 + 42 = 0
0 + -2g = -198 + 42
-2g = -198 + 42

Combine like terms: -198 + 42 = -156
-2g = -156

Divide each side by '-2'.
g = 78

Simplifying
g = 78