-3(2-1)=12

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Solution for -3(2-1)=12 equation: 


Simplifying
-3(2 + -1) = 12

Combine like terms: 2 + -1 = 1
-3(1) = 12

Multiply -3 * 1
-3 = 12

Solving
-3 = 12

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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