8=-4/u

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Solution for 8=-4/u equation: 



8=-4/u

We move all terms to the left:

8-(-4/u)=0



Domain of the equation: u)!=0

u!=0/1

u!=0

u∈R



We get rid of parentheses

4/u+8=0

We multiply all the terms by the denominator


8*u+4=0

We add all the numbers together, and all the variables

8u+4=0

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

8u=-4

u=-4/8

u=-1/2

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