-5b+21=8-3(-6+2b)

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Solution for -5b+21=8-3(-6+2b) equation: 



-5b+21=8-3(-6+2b)

We move all terms to the left:

-5b+21-(8-3(-6+2b))=0

We add all the numbers together, and all the variables

-5b-(8-3(2b-6))+21=0



We calculate terms in parentheses: -(8-3(2b-6)), so:

8-3(2b-6)

determiningTheFunctionDomain
-3(2b-6)+8

We multiply parentheses

-6b+18+8

We add all the numbers together, and all the variables

-6b+26

Back to the equation:

-(-6b+26)



We get rid of parentheses

-5b+6b-26+21=0

We add all the numbers together, and all the variables

b-5=0

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

b=5

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