3-[7+(4-5)]=

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Solution for 3-[7+(4-5)]= equation: 


Simplifying
3 + -1[7 + (4 + -5)] = 0

Combine like terms: 4 + -5 = -1
3 + -1[7 + (-1)] = 0
3 + -1[7 + -1] = 0

Combine like terms: 7 + -1 = 6
3 + -1[6] = 0

Multiply -1 * 6
3 + -6 = 0

Combine like terms: 3 + -6 = -3
-3 = 0

Solving
-3 = 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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