4-[-5]=

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Solution for 4-[-5]= equation: 


Simplifying
4 + -1[-5] = 0

Multiply -1 * -5
4 + 5 = 0

Combine like terms: 4 + 5 = 9
9 = 0

Solving
9 = 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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