18x+21=18x+21

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Solution for 18x+21=18x+21 equation: 


Simplifying
18x + 21 = 18x + 21

Reorder the terms:
21 + 18x = 18x + 21

Reorder the terms:
21 + 18x = 21 + 18x

Add '-21' to each side of the equation.
21 + -21 + 18x = 21 + -21 + 18x

Combine like terms: 21 + -21 = 0
0 + 18x = 21 + -21 + 18x
18x = 21 + -21 + 18x

Combine like terms: 21 + -21 = 0
18x = 0 + 18x
18x = 18x

Add '-18x' to each side of the equation.
18x + -18x = 18x + -18x

Combine like terms: 18x + -18x = 0
0 = 18x + -18x

Combine like terms: 18x + -18x = 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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