-b+4b=-8b-b

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Solution for -b+4b=-8b-b equation: 



-b+4b=-8b-b

We move all terms to the left:

-b+4b-(-8b-b)=0

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

3b-(-9b)=0

We get rid of parentheses

3b+9b=0

We add all the numbers together, and all the variables

12b=0

b=0/12

b=0

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