20-b=7(-6b-3)

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Solution for 20-b=7(-6b-3) equation: 



20-b=7(-6b-3)

We move all terms to the left:

20-b-(7(-6b-3))=0

We add all the numbers together, and all the variables

-1b-(7(-6b-3))+20=0



We calculate terms in parentheses: -(7(-6b-3)), so:

7(-6b-3)

We multiply parentheses

-42b-21

Back to the equation:

-(-42b-21)



We get rid of parentheses

-1b+42b+21+20=0

We add all the numbers together, and all the variables

41b+41=0

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

41b=-41

b=-41/41

b=-1

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