20-21+55=

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Solution for 20-21+55= equation: 


Simplifying
20 + -21 + 55 = 0

Combine like terms: 20 + -21 = -1
-1 + 55 = 0

Combine like terms: -1 + 55 = 54
54 = 0

Solving
54 = 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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