1+-2+-1=0

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Solution for 1+-2+-1=0 equation: 


Simplifying
1 + -2 + -1 = 0

Combine like terms: 1 + -2 = -1
-1 + -1 = 0

Combine like terms: -1 + -1 = -2
-2 = 0

Solving
-2 = 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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