9+9-9+9-9+9-9=18

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Solution for 9+9-9+9-9+9-9=18 equation: 


Simplifying
9 + 9 + -9 + 9 + -9 + 9 + -9 = 18

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

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

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

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

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

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

Solving
9 = 18

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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