12+[4+(-9)]=

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


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

Combine like terms: 4 + -9 = -5
12 + [-5] = 0
12 + -5 = 0

Combine like terms: 12 + -5 = 7
7 = 0

Solving
7 = 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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