21-7-7=14-21

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Solution for 21-7-7=14-21 equation: 


Simplifying
21 + -7 + -7 = 14 + -21

Combine like terms: 21 + -7 = 14
14 + -7 = 14 + -21

Combine like terms: 14 + -7 = 7
7 = 14 + -21

Combine like terms: 14 + -21 = -7
7 = -7

Solving
7 = -7

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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