4(3+2b)=20

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Solution for 4(3+2b)=20 equation: 


Simplifying
4(3 + 2b) = 20
(3 * 4 + 2b * 4) = 20
(12 + 8b) = 20

Solving
12 + 8b = 20

Solving for variable 'b'.

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

Add '-12' to each side of the equation.
12 + -12 + 8b = 20 + -12

Combine like terms: 12 + -12 = 0
0 + 8b = 20 + -12
8b = 20 + -12

Combine like terms: 20 + -12 = 8
8b = 8

Divide each side by '8'.
b = 1

Simplifying
b = 1

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