4=2-(-1)

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Solution for 4=2-(-1) equation: 


Simplifying
4 = 2 + -1(-1)

Multiply -1 * -1
4 = 2 + 1

Combine like terms: 2 + 1 = 3
4 = 3

Solving
4 = 3

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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