7+x+(-x)=18

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Solution for 7+x+(-x)=18 equation: 


Simplifying
7 + x + (-1x) = 18

Combine like terms: x + (-1x) = 0
7 + 0 = 18
7 = 18

Solving
7 = 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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