-5-(-5)+9-(-9)=

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Solution for -5-(-5)+9-(-9)= equation: 


Simplifying
-5 + -1(-5) + 9 + -1(-9) = 0

Multiply -1 * -5
-5 + 5 + 9 + -1(-9) = 0

Multiply -1 * -9
-5 + 5 + 9 + 9 = 0

Combine like terms: -5 + 5 = 0
0 + 9 + 9 = 0
9 + 9 = 0

Combine like terms: 9 + 9 = 18
18 = 0

Solving
18 = 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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