B=(2x+9)

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Solution for B=(2x+9) equation: 



=(2B+9)

We move all terms to the left:

-((2B+9))=0



We calculate terms in parentheses: -((2B+9)), so:

(2B+9)

We get rid of parentheses

2B+9

Back to the equation:

-(2B+9)



We get rid of parentheses

-2B-9=0

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

-2B=9

B=9/-2

B=-4+1/2

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