4=0.80b

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Solution for 4=0.80b equation: 



4=0.80b

We move all terms to the left:

4-(0.80b)=0

We add all the numbers together, and all the variables

-(+0.80b)+4=0

We get rid of parentheses

-0.80b+4=0

We add all the numbers together, and all the variables

-0.8b+4=0

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

-0.8b=-4

b=-4/-0.8

b=+5

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