1+2-5=21

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Solution for 1+2-5=21 equation: 


Simplifying
1 + 2 + -5 = 21

Combine like terms: 1 + 2 = 3
3 + -5 = 21

Combine like terms: 3 + -5 = -2
-2 = 21

Solving
-2 = 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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