7=28/u

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Solution for 7=28/u equation: 



7=28/u

We move all terms to the left:

7-(28/u)=0



Domain of the equation: u)!=0

u!=0/1

u!=0

u∈R



We add all the numbers together, and all the variables

-(+28/u)+7=0

We get rid of parentheses

-28/u+7=0

We multiply all the terms by the denominator


7*u-28=0

We add all the numbers together, and all the variables

7u-28=0

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

7u=28

u=28/7

u=4

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