-1=-8+4/u

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Solution for -1=-8+4/u equation: 



-1=-8+4/u

We move all terms to the left:

-1-(-8+4/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

-(4/u-8)-1=0

We get rid of parentheses

-4/u+8-1=0

We multiply all the terms by the denominator


8*u-1*u-4=0

We add all the numbers together, and all the variables

7u-4=0

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

7u=4

u=4/7

u=4/7

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