-18+x=x+21

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Solution for -18+x=x+21 equation: 


Simplifying
-18 + x = x + 21

Reorder the terms:
-18 + x = 21 + x

Add '-1x' to each side of the equation.
-18 + x + -1x = 21 + x + -1x

Combine like terms: x + -1x = 0
-18 + 0 = 21 + x + -1x
-18 = 21 + x + -1x

Combine like terms: x + -1x = 0
-18 = 21 + 0
-18 = 21

Solving
-18 = 21

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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