8/5=4.2/b

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Solution for 8/5=4.2/b equation: 



8/5=4.2/b

We move all terms to the left:

8/5-(4.2/b)=0



Domain of the equation: b)!=0

b!=0/1

b!=0

b∈R



We add all the numbers together, and all the variables

-(+4.2/b)+8/5=0

We get rid of parentheses

-4.2/b+8/5=0

We calculate fractions

There is no solution for this equation

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