7x-3x=9+4x-9

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Solution for 7x-3x=9+4x-9 equation: 


Simplifying
7x + -3x = 9 + 4x + -9

Combine like terms: 7x + -3x = 4x
4x = 9 + 4x + -9

Reorder the terms:
4x = 9 + -9 + 4x

Combine like terms: 9 + -9 = 0
4x = 0 + 4x
4x = 4x

Add '-4x' to each side of the equation.
4x + -4x = 4x + -4x

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

Combine like terms: 4x + -4x = 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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