-11b+9+1+4b=-9(b+8)+9(b-1)

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Solution for -11b+9+1+4b=-9(b+8)+9(b-1) equation: 



-11b+9+1+4b=-9(b+8)+9(b-1)

We move all terms to the left:

-11b+9+1+4b-(-9(b+8)+9(b-1))=0

We add all the numbers together, and all the variables

-7b-(-9(b+8)+9(b-1))+10=0



We calculate terms in parentheses: -(-9(b+8)+9(b-1)), so:

-9(b+8)+9(b-1)

We multiply parentheses

-9b+9b-72-9

We add all the numbers together, and all the variables

-81

Back to the equation:

-(-81)



We add all the numbers together, and all the variables

-7b+91=0

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

-7b=-91

b=-91/-7

b=+13

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