-5-7b=-3(4b+5)

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Solution for -5-7b=-3(4b+5) equation: 



-5-7b=-3(4b+5)

We move all terms to the left:

-5-7b-(-3(4b+5))=0



We calculate terms in parentheses: -(-3(4b+5)), so:

-3(4b+5)

We multiply parentheses

-12b-15

Back to the equation:

-(-12b-15)



We get rid of parentheses

-7b+12b+15-5=0

We add all the numbers together, and all the variables

5b+10=0

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

5b=-10

b=-10/5

b=-2

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