-1=-12b-5(15-b)

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Solution for -1=-12b-5(15-b) equation: 



-1=-12b-5(15-b)

We move all terms to the left:

-1-(-12b-5(15-b))=0

We add all the numbers together, and all the variables

-(-12b-5(-1b+15))-1=0



We calculate terms in parentheses: -(-12b-5(-1b+15)), so:

-12b-5(-1b+15)

We multiply parentheses

-12b+5b-75

We add all the numbers together, and all the variables

-7b-75

Back to the equation:

-(-7b-75)



We get rid of parentheses

7b+75-1=0

We add all the numbers together, and all the variables

7b+74=0

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

7b=-74

b=-74/7

b=-10+4/7

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