-21x+42=-27x

Solution for -21x+42=-27x equation:

Simplifying
-21x + 42 = -27x

Reorder the terms:
42 + -21x = -27x

Solving
42 + -21x = -27x

Solving for variable 'x'.

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

Add '27x' to each side of the equation.
42 + -21x + 27x = -27x + 27x

Combine like terms: -21x + 27x = 6x
42 + 6x = -27x + 27x

Combine like terms: -27x + 27x = 0
42 + 6x = 0

Add '-42' to each side of the equation.
42 + -42 + 6x = 0 + -42

Combine like terms: 42 + -42 = 0
0 + 6x = 0 + -42
6x = 0 + -42

Combine like terms: 0 + -42 = -42
6x = -42

Divide each side by '6'.
x = -7

Simplifying
x = -7