18=7b+4-7

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Solution for 18=7b+4-7 equation: 



18=7b+4-7

We move all terms to the left:

18-(7b+4-7)=0

We add all the numbers together, and all the variables

-(7b-3)+18=0

We get rid of parentheses

-7b+3+18=0

We add all the numbers together, and all the variables

-7b+21=0

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

-7b=-21

b=-21/-7

b=+3

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