7(b+9)=9(b+7)

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Solution for 7(b+9)=9(b+7) equation: 



7(b+9)=9(b+7)

We move all terms to the left:

7(b+9)-(9(b+7))=0

We multiply parentheses

7b-(9(b+7))+63=0



We calculate terms in parentheses: -(9(b+7)), so:

9(b+7)

We multiply parentheses

9b+63

Back to the equation:

-(9b+63)



We get rid of parentheses

7b-9b-63+63=0

We add all the numbers together, and all the variables

-2b=0

b=0/-2

b=0

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