4=b+7+2b

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Solution for 4=b+7+2b equation: 



4=b+7+2b

We move all terms to the left:

4-(b+7+2b)=0

We add all the numbers together, and all the variables

-(3b+7)+4=0

We get rid of parentheses

-3b-7+4=0

We add all the numbers together, and all the variables

-3b-3=0

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

-3b=3

b=3/-3

b=-1

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