12x-8=12x+21

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Solution for 12x-8=12x+21 equation: 


Simplifying
12x + -8 = 12x + 21

Reorder the terms:
-8 + 12x = 12x + 21

Reorder the terms:
-8 + 12x = 21 + 12x

Add '-12x' to each side of the equation.
-8 + 12x + -12x = 21 + 12x + -12x

Combine like terms: 12x + -12x = 0
-8 + 0 = 21 + 12x + -12x
-8 = 21 + 12x + -12x

Combine like terms: 12x + -12x = 0
-8 = 21 + 0
-8 = 21

Solving
-8 = 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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