4+8b=20

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Solution for 4+8b=20 equation: 



4+8b=20

We move all terms to the left:

4+8b-(20)=0

We add all the numbers together, and all the variables

8b-16=0

We move all terms containing b to the left, all other terms to the right

8b=16

b=16/8

b=2

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