7b-84=4b-27

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Solution for 7b-84=4b-27 equation: 



7b-84=4b-27

We move all terms to the left:

7b-84-(4b-27)=0

We get rid of parentheses

7b-4b+27-84=0

We add all the numbers together, and all the variables

3b-57=0

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

3b=57

b=57/3

b=19

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