3+9-1=

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Solution for 3+9-1= equation: 


Simplifying
3 + 9 + -1 = 0

Combine like terms: 3 + 9 = 12
12 + -1 = 0

Combine like terms: 12 + -1 = 11
11 = 0

Solving
11 = 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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