2(10+b)=80

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Solution for 2(10+b)=80 equation: 


Simplifying
2(10 + b) = 80
(10 * 2 + b * 2) = 80
(20 + 2b) = 80

Solving
20 + 2b = 80

Solving for variable 'b'.

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

Add '-20' to each side of the equation.
20 + -20 + 2b = 80 + -20

Combine like terms: 20 + -20 = 0
0 + 2b = 80 + -20
2b = 80 + -20

Combine like terms: 80 + -20 = 60
2b = 60

Divide each side by '2'.
b = 30

Simplifying
b = 30

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