b=10(b+20)=30

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Solution for b=10(b+20)=30 equation: 



b=10(b+20)=30

We move all terms to the left:

b-(10(b+20))=0



We calculate terms in parentheses: -(10(b+20)), so:

10(b+20)

We multiply parentheses

10b+200

Back to the equation:

-(10b+200)



We get rid of parentheses

b-10b-200=0

We add all the numbers together, and all the variables

-9b-200=0

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

-9b=200

b=200/-9

b=-22+2/9

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