-18=-42+12

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Solution for -18=-42+12 equation: 


Simplifying
-18 = -42 + 12

Combine like terms: -42 + 12 = -30
-18 = -30

Solving
-18 = -30

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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