-5+15-21=-6

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Solution for -5+15-21=-6 equation: 


Simplifying
-5 + 15 + -21 = -6

Combine like terms: -5 + 15 = 10
10 + -21 = -6

Combine like terms: 10 + -21 = -11
-11 = -6

Solving
-11 = -6

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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