b+21=27

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Solution for b+21=27 equation: 


Simplifying
b + 21 = 27

Reorder the terms:
21 + b = 27

Solving
21 + b = 27

Solving for variable 'b'.

Move all terms containing b to the left, all other terms to the right.

Add '-21' to each side of the equation.
21 + -21 + b = 27 + -21

Combine like terms: 21 + -21 = 0
0 + b = 27 + -21
b = 27 + -21

Combine like terms: 27 + -21 = 6
b = 6

Simplifying
b = 6

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