66=-2(5b+4)-6(5b+1)

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Solution for 66=-2(5b+4)-6(5b+1) equation: 



66=-2(5b+4)-6(5b+1)

We move all terms to the left:

66-(-2(5b+4)-6(5b+1))=0



We calculate terms in parentheses: -(-2(5b+4)-6(5b+1)), so:

-2(5b+4)-6(5b+1)

We multiply parentheses

-10b-30b-8-6

We add all the numbers together, and all the variables

-40b-14

Back to the equation:

-(-40b-14)



We get rid of parentheses

40b+14+66=0

We add all the numbers together, and all the variables

40b+80=0

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

40b=-80

b=-80/40

b=-2

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