1+7=9-1

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Solution for 1+7=9-1 equation: 


Simplifying
1 + 7 = 9 + -1

Combine like terms: 1 + 7 = 8
8 = 9 + -1

Combine like terms: 9 + -1 = 8
8 = 8

Add '-8' to each side of the equation.
8 + -8 = 8 + -8

Combine like terms: 8 + -8 = 0
0 = 8 + -8

Combine like terms: 8 + -8 = 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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