9+(-9)=

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Solution for 9+(-9)= equation: 


Simplifying
9 + (-9) = 0
9 + -9 = 0

Combine like terms: 9 + -9 = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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