[(-9)+(-6)]+(-13)=

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Solution for [(-9)+(-6)]+(-13)= equation: 


Simplifying
[(-9) + (-6)] + (-13) = 0
[-9 + (-6)] + (-13) = 0
[-9 + -6] + (-13) = 0

Combine like terms: -9 + -6 = -15
[-15] + (-13) = 0
-15 + (-13) = 0
-15 + -13 = 0

Combine like terms: -15 + -13 = -28
-28 = 0

Solving
-28 = 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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