x+-21=2x

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Solution for x+-21=2x equation:


Simplifying
x + -21 = 2x

Reorder the terms:
-21 + x = 2x

Solving
-21 + x = 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.
-21 + x + -2x = 2x + -2x

Combine like terms: x + -2x = -1x
-21 + -1x = 2x + -2x

Combine like terms: 2x + -2x = 0
-21 + -1x = 0

Add '21' to each side of the equation.
-21 + 21 + -1x = 0 + 21

Combine like terms: -21 + 21 = 0
0 + -1x = 0 + 21
-1x = 0 + 21

Combine like terms: 0 + 21 = 21
-1x = 21

Divide each side by '-1'.
x = -21

Simplifying
x = -21

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