0.31=0.5b+0.5-0.3b

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Solution for 0.31=0.5b+0.5-0.3b equation: 



0.31=0.5b+0.5-0.3b

We move all terms to the left:

0.31-(0.5b+0.5-0.3b)=0

We add all the numbers together, and all the variables

-(0.2b+0.5)+0.31=0

We get rid of parentheses

-0.2b-0.5+0.31=0

We add all the numbers together, and all the variables

-0.2b-0.19=0

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

-0.2b=0.19

b=0.19/-0.2

b=-0.19/0.2

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