-6b+21=21-6b

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Solution for -6b+21=21-6b equation: 


Simplifying
-6b + 21 = 21 + -6b

Reorder the terms:
21 + -6b = 21 + -6b

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

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

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

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

Combine like terms: -6b + 6b = 0
0 = -6b + 6b

Combine like terms: -6b + 6b = 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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