-3b=9-4b

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Solution for -3b=9-4b equation: 



-3b=9-4b

We move all terms to the left:

-3b-(9-4b)=0

We add all the numbers together, and all the variables

-3b-(-4b+9)=0

We get rid of parentheses

-3b+4b-9=0

We add all the numbers together, and all the variables

b-9=0

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

b=9

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