21x+6=21x+6

Solution for 21x+6=21x+6 equation:

Simplifying
21x + 6 = 21x + 6

Reorder the terms:
6 + 21x = 21x + 6

Reorder the terms:
6 + 21x = 6 + 21x

Add '-6' to each side of the equation.
6 + -6 + 21x = 6 + -6 + 21x

Combine like terms: 6 + -6 = 0
0 + 21x = 6 + -6 + 21x
21x = 6 + -6 + 21x

Combine like terms: 6 + -6 = 0
21x = 0 + 21x
21x = 21x

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

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

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

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.