-40=-4(8+3b)+2(7b-2)

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Solution for -40=-4(8+3b)+2(7b-2) equation: 



-40=-4(8+3b)+2(7b-2)

We move all terms to the left:

-40-(-4(8+3b)+2(7b-2))=0

We add all the numbers together, and all the variables

-(-4(3b+8)+2(7b-2))-40=0



We calculate terms in parentheses: -(-4(3b+8)+2(7b-2)), so:

-4(3b+8)+2(7b-2)

We multiply parentheses

-12b+14b-32-4

We add all the numbers together, and all the variables

2b-36

Back to the equation:

-(2b-36)



We get rid of parentheses

-2b+36-40=0

We add all the numbers together, and all the variables

-2b-4=0

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

-2b=4

b=4/-2

b=-2

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