7x-9=7x-9

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Solution for 7x-9=7x-9 equation: 


Simplifying
7x + -9 = 7x + -9

Reorder the terms:
-9 + 7x = 7x + -9

Reorder the terms:
-9 + 7x = -9 + 7x

Add '9' to each side of the equation.
-9 + 9 + 7x = -9 + 9 + 7x

Combine like terms: -9 + 9 = 0
0 + 7x = -9 + 9 + 7x
7x = -9 + 9 + 7x

Combine like terms: -9 + 9 = 0
7x = 0 + 7x
7x = 7x

Add '-7x' to each side of the equation.
7x + -7x = 7x + -7x

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

Combine like terms: 7x + -7x = 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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