7=x-x+4

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Solution for 7=x-x+4 equation: 


Simplifying
7 = x + -1x + 4

Reorder the terms:
7 = 4 + x + -1x

Combine like terms: x + -1x = 0
7 = 4 + 0
7 = 4

Solving
7 = 4

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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