4b-20=-2(1+b)

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Solution for 4b-20=-2(1+b) equation: 



4b-20=-2(1+b)

We move all terms to the left:

4b-20-(-2(1+b))=0

We add all the numbers together, and all the variables

4b-(-2(b+1))-20=0



We calculate terms in parentheses: -(-2(b+1)), so:

-2(b+1)

We multiply parentheses

-2b-2

Back to the equation:

-(-2b-2)



We get rid of parentheses

4b+2b+2-20=0

We add all the numbers together, and all the variables

6b-18=0

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

6b=18

b=18/6

b=3

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