30=b+6b-9

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Solution for 30=b+6b-9 equation: 



30=b+6b-9

We move all terms to the left:

30-(b+6b-9)=0

We add all the numbers together, and all the variables

-(7b-9)+30=0

We get rid of parentheses

-7b+9+30=0

We add all the numbers together, and all the variables

-7b+39=0

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

-7b=-39

b=-39/-7

b=5+4/7

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