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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

-4(-5b+5)-(-1b+8)+7=0

We multiply parentheses

20b-(-1b+8)-20+7=0

We get rid of parentheses

20b+1b-8-20+7=0

We add all the numbers together, and all the variables

21b-21=0

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

21b=21

b=21/21

b=1

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