12-[4+(-9)3]=

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Solution for 12-[4+(-9)3]= equation: 


Simplifying
12 + -1[4 + (-9) * 3] = 0

Multiply -9 * 3
12 + -1[4 + -27] = 0

Combine like terms: 4 + -27 = -23
12 + -1[-23] = 0

Multiply -1 * -23
12 + 23 = 0

Combine like terms: 12 + 23 = 35
35 = 0

Solving
35 = 0

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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