(b+20)+(b+40)+b=180

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Solution for (b+20)+(b+40)+b=180 equation: 


Simplifying
(b + 20) + (b + 40) + b = 180

Reorder the terms:
(20 + b) + (b + 40) + b = 180

Remove parenthesis around (20 + b)
20 + b + (b + 40) + b = 180

Reorder the terms:
20 + b + (40 + b) + b = 180

Remove parenthesis around (40 + b)
20 + b + 40 + b + b = 180

Reorder the terms:
20 + 40 + b + b + b = 180

Combine like terms: 20 + 40 = 60
60 + b + b + b = 180

Combine like terms: b + b = 2b
60 + 2b + b = 180

Combine like terms: 2b + b = 3b
60 + 3b = 180

Solving
60 + 3b = 180

Solving for variable 'b'.

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

Add '-60' to each side of the equation.
60 + -60 + 3b = 180 + -60

Combine like terms: 60 + -60 = 0
0 + 3b = 180 + -60
3b = 180 + -60

Combine like terms: 180 + -60 = 120
3b = 120

Divide each side by '3'.
b = 40

Simplifying
b = 40

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