9b-27=21

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Solution for 9b-27=21 equation: 


Simplifying
9b + -27 = 21

Reorder the terms:
-27 + 9b = 21

Solving
-27 + 9b = 21

Solving for variable 'b'.

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

Add '27' to each side of the equation.
-27 + 27 + 9b = 21 + 27

Combine like terms: -27 + 27 = 0
0 + 9b = 21 + 27
9b = 21 + 27

Combine like terms: 21 + 27 = 48
9b = 48

Divide each side by '9'.
b = 5.333333333

Simplifying
b = 5.333333333

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