-3b+2-4b=2b-21+6

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Solution for -3b+2-4b=2b-21+6 equation: 



-3b+2-4b=2b-21+6

We move all terms to the left:

-3b+2-4b-(2b-21+6)=0

We add all the numbers together, and all the variables

-3b-4b-(2b-15)+2=0

We add all the numbers together, and all the variables

-7b-(2b-15)+2=0

We get rid of parentheses

-7b-2b+15+2=0

We add all the numbers together, and all the variables

-9b+17=0

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

-9b=-17

b=-17/-9

b=1+8/9

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