7-1=8-7

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Solution for 7-1=8-7 equation: 


Simplifying
7 + -1 = 8 + -7

Combine like terms: 7 + -1 = 6
6 = 8 + -7

Combine like terms: 8 + -7 = 1
6 = 1

Solving
6 = 1

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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