4x-4x=7-7

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Solution for 4x-4x=7-7 equation: 


Simplifying
4x + -4x = 7 + -7

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

Combine like terms: 7 + -7 = 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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