9+7b=9-20b

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Solution for 9+7b=9-20b equation: 



9+7b=9-20b

We move all terms to the left:

9+7b-(9-20b)=0

We add all the numbers together, and all the variables

7b-(-20b+9)+9=0

We get rid of parentheses

7b+20b-9+9=0

We add all the numbers together, and all the variables

27b=0

b=0/27

b=0

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