1-1+1-1=

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


Simplifying
1 + -1 + 1 + -1 = 0

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

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

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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