-42-2x=6x+21

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Solution for -42-2x=6x+21 equation:


Simplifying
-42 + -2x = 6x + 21

Reorder the terms:
-42 + -2x = 21 + 6x

Solving
-42 + -2x = 21 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
-42 + -2x + -6x = 21 + 6x + -6x

Combine like terms: -2x + -6x = -8x
-42 + -8x = 21 + 6x + -6x

Combine like terms: 6x + -6x = 0
-42 + -8x = 21 + 0
-42 + -8x = 21

Add '42' to each side of the equation.
-42 + 42 + -8x = 21 + 42

Combine like terms: -42 + 42 = 0
0 + -8x = 21 + 42
-8x = 21 + 42

Combine like terms: 21 + 42 = 63
-8x = 63

Divide each side by '-8'.
x = -7.875

Simplifying
x = -7.875

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