7-20=1

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Solution for 7-20=1 equation: 


Simplifying
7 + -20 = 1

Combine like terms: 7 + -20 = -13
-13 = 1

Solving
-13 = 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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