-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)-1=0

We get rid of parentheses

4/u-1=0

We multiply all the terms by the denominator


-1*u+4=0

We add all the numbers together, and all the variables

-1u+4=0

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

-u=-4

u=-4/-1

u=+4

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