4b+4b-4=20

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Solution for 4b+4b-4=20 equation: 


Simplifying
4b + 4b + -4 = 20

Reorder the terms:
-4 + 4b + 4b = 20

Combine like terms: 4b + 4b = 8b
-4 + 8b = 20

Solving
-4 + 8b = 20

Solving for variable 'b'.

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

Add '4' to each side of the equation.
-4 + 4 + 8b = 20 + 4

Combine like terms: -4 + 4 = 0
0 + 8b = 20 + 4
8b = 20 + 4

Combine like terms: 20 + 4 = 24
8b = 24

Divide each side by '8'.
b = 3

Simplifying
b = 3

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