2+0.8b=0.9b

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Solution for 2+0.8b=0.9b equation: 



2+0.8b=0.9b

We move all terms to the left:

2+0.8b-(0.9b)=0

We add all the numbers together, and all the variables

0.8b-(+0.9b)+2=0

We get rid of parentheses

0.8b-0.9b+2=0

We add all the numbers together, and all the variables

-0.1b+2=0

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

-0.1b=-2

b=-2/-0.1

b=+20

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