-3[9+5]=12

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Solution for -3[9+5]=12 equation: 


Simplifying
-3[9 + 5] = 12

Combine like terms: 9 + 5 = 14
-3[14] = 12

Multiply -3 * 14
-42 = 12

Solving
-42 = 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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