3[-5+9b]=66

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Solution for 3[-5+9b]=66 equation: 


Simplifying
3[-5 + 9b] = 66
[-5 * 3 + 9b * 3] = 66
[-15 + 27b] = 66

Solving
-15 + 27b = 66

Solving for variable 'b'.

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

Add '15' to each side of the equation.
-15 + 15 + 27b = 66 + 15

Combine like terms: -15 + 15 = 0
0 + 27b = 66 + 15
27b = 66 + 15

Combine like terms: 66 + 15 = 81
27b = 81

Divide each side by '27'.
b = 3

Simplifying
b = 3

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