30=2(7+b)

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Solution for 30=2(7+b) equation: 



30=2(7+b)

We move all terms to the left:

30-(2(7+b))=0

We add all the numbers together, and all the variables

-(2(b+7))+30=0



We calculate terms in parentheses: -(2(b+7)), so:

2(b+7)

We multiply parentheses

2b+14

Back to the equation:

-(2b+14)



We get rid of parentheses

-2b-14+30=0

We add all the numbers together, and all the variables

-2b+16=0

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

-2b=-16

b=-16/-2

b=+8

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