12+18+21=

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Solution for 12+18+21= equation: 


Simplifying
12 + 18 + 21 = 0

Combine like terms: 12 + 18 = 30
30 + 21 = 0

Combine like terms: 30 + 21 = 51
51 = 0

Solving
51 = 0

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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