27=45-3b

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Solution for 27=45-3b equation: 


Simplifying
27 = 45 + -3b

Solving
27 = 45 + -3b

Solving for variable 'b'.

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

Add '3b' to each side of the equation.
27 + 3b = 45 + -3b + 3b

Combine like terms: -3b + 3b = 0
27 + 3b = 45 + 0
27 + 3b = 45

Add '-27' to each side of the equation.
27 + -27 + 3b = 45 + -27

Combine like terms: 27 + -27 = 0
0 + 3b = 45 + -27
3b = 45 + -27

Combine like terms: 45 + -27 = 18
3b = 18

Divide each side by '3'.
b = 6

Simplifying
b = 6

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