7=b+2(1+2b)

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Solution for 7=b+2(1+2b) equation: 



7=b+2(1+2b)

We move all terms to the left:

7-(b+2(1+2b))=0

We add all the numbers together, and all the variables

-(b+2(2b+1))+7=0



We calculate terms in parentheses: -(b+2(2b+1)), so:

b+2(2b+1)

We multiply parentheses

b+4b+2

We add all the numbers together, and all the variables

5b+2

Back to the equation:

-(5b+2)



We get rid of parentheses

-5b-2+7=0

We add all the numbers together, and all the variables

-5b+5=0

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

-5b=-5

b=-5/-5

b=1

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