61=-2(-2b+6)-5(1-7b)

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Solution for 61=-2(-2b+6)-5(1-7b) equation: 



61=-2(-2b+6)-5(1-7b)

We move all terms to the left:

61-(-2(-2b+6)-5(1-7b))=0

We add all the numbers together, and all the variables

-(-2(-2b+6)-5(-7b+1))+61=0



We calculate terms in parentheses: -(-2(-2b+6)-5(-7b+1)), so:

-2(-2b+6)-5(-7b+1)

We multiply parentheses

4b+35b-12-5

We add all the numbers together, and all the variables

39b-17

Back to the equation:

-(39b-17)



We get rid of parentheses

-39b+17+61=0

We add all the numbers together, and all the variables

-39b+78=0

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

-39b=-78

b=-78/-39

b=+2

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