-15+(-12)+(-21)=

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Solution for -15+(-12)+(-21)= equation: 


Simplifying
-15 + (-12) + (-21) = 0
-15 + -12 + (-21) = 0
-15 + -12 + -21 = 0

Combine like terms: -15 + -12 = -27
-27 + -21 = 0

Combine like terms: -27 + -21 = -48
-48 = 0

Solving
-48 = 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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