7b-(b-4)=25

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Solution for 7b-(b-4)=25 equation: 



7b-(b-4)=25

We move all terms to the left:

7b-(b-4)-(25)=0

We get rid of parentheses

7b-b+4-25=0

We add all the numbers together, and all the variables

6b-21=0

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

6b=21

b=21/6

b=3+1/2

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