7-8=18

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Solution for 7-8=18 equation: 


Simplifying
7 + -8 = 18

Combine like terms: 7 + -8 = -1
-1 = 18

Solving
-1 = 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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