4b+9=2(b+2)+b

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Solution for 4b+9=2(b+2)+b equation: 



4b+9=2(b+2)+b

We move all terms to the left:

4b+9-(2(b+2)+b)=0



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

2(b+2)+b

We add all the numbers together, and all the variables

b+2(b+2)

We multiply parentheses

b+2b+4

We add all the numbers together, and all the variables

3b+4

Back to the equation:

-(3b+4)



We get rid of parentheses

4b-3b-4+9=0

We add all the numbers together, and all the variables

b+5=0

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

b=-5

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