-42=2x

Solution for -42=2x equation:

Simplifying
-42 = 2x

Solving
-42 = 2x

Solving for variable 'x'.

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

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

Combine like terms: 2x + -2x = 0
-42 + -2x = 0

Add '42' to each side of the equation.
-42 + 42 + -2x = 0 + 42

Combine like terms: -42 + 42 = 0
0 + -2x = 0 + 42
-2x = 0 + 42

Combine like terms: 0 + 42 = 42
-2x = 42

Divide each side by '-2'.
x = -21

Simplifying
x = -21