42=-logx

Solution for 42=-logx equation:

Simplifying
42 = -1logx

Solving
42 = -1glox

Solving for variable 'g'.

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

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

Combine like terms: -1glox + glox = 0
42 + glox = 0

Add '-42' to each side of the equation.
42 + -42 + glox = 0 + -42

Combine like terms: 42 + -42 = 0
0 + glox = 0 + -42
glox = 0 + -42

Combine like terms: 0 + -42 = -42
glox = -42

Divide each side by 'lox'.
g = -42l-1o-1x-1

Simplifying
g = -42l-1o-1x-1