3x-21=138+3x

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Solution for 3x-21=138+3x equation: 


Simplifying
3x + -21 = 138 + 3x

Reorder the terms:
-21 + 3x = 138 + 3x

Add '-3x' to each side of the equation.
-21 + 3x + -3x = 138 + 3x + -3x

Combine like terms: 3x + -3x = 0
-21 + 0 = 138 + 3x + -3x
-21 = 138 + 3x + -3x

Combine like terms: 3x + -3x = 0
-21 = 138 + 0
-21 = 138

Solving
-21 = 138

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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