21b=b+45

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Solution for 21b=b+45 equation: 


Simplifying
21b = b + 45

Reorder the terms:
21b = 45 + b

Solving
21b = 45 + b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
21b + -1b = 45 + b + -1b

Combine like terms: 21b + -1b = 20b
20b = 45 + b + -1b

Combine like terms: b + -1b = 0
20b = 45 + 0
20b = 45

Divide each side by '20'.
b = 2.25

Simplifying
b = 2.25

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