5+7(7-5b)=8(b-4)

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Solution for 5+7(7-5b)=8(b-4) equation: 



5+7(7-5b)=8(b-4)

We move all terms to the left:

5+7(7-5b)-(8(b-4))=0

We add all the numbers together, and all the variables

7(-5b+7)-(8(b-4))+5=0

We multiply parentheses

-35b-(8(b-4))+49+5=0



We calculate terms in parentheses: -(8(b-4)), so:

8(b-4)

We multiply parentheses

8b-32

Back to the equation:

-(8b-32)



We add all the numbers together, and all the variables

-35b-(8b-32)+54=0

We get rid of parentheses

-35b-8b+32+54=0

We add all the numbers together, and all the variables

-43b+86=0

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

-43b=-86

b=-86/-43

b=+2

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