21-1=4-31

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Solution for 21-1=4-31 equation: 


Simplifying
21 + -1 = 4 + -31

Combine like terms: 21 + -1 = 20
20 = 4 + -31

Combine like terms: 4 + -31 = -27
20 = -27

Solving
20 = -27

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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