-4-21+15=

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Solution for -4-21+15= equation: 


Simplifying
-4 + -21 + 15 = 0

Combine like terms: -4 + -21 = -25
-25 + 15 = 0

Combine like terms: -25 + 15 = -10
-10 = 0

Solving
-10 = 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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