x+7-x=12

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Solution for x+7-x=12 equation: 


Simplifying
x + 7 + -1x = 12

Reorder the terms:
7 + x + -1x = 12

Combine like terms: x + -1x = 0
7 + 0 = 12
7 = 12

Solving
7 = 12

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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