6n+21=6n-12

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Solution for 6n+21=6n-12 equation: 


Simplifying
6n + 21 = 6n + -12

Reorder the terms:
21 + 6n = 6n + -12

Reorder the terms:
21 + 6n = -12 + 6n

Add '-6n' to each side of the equation.
21 + 6n + -6n = -12 + 6n + -6n

Combine like terms: 6n + -6n = 0
21 + 0 = -12 + 6n + -6n
21 = -12 + 6n + -6n

Combine like terms: 6n + -6n = 0
21 = -12 + 0
21 = -12

Solving
21 = -12

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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