-4=-4/r-8

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Solution for -4=-4/r-8 equation: 



-4=-4/r-8

We move all terms to the left:

-4-(-4/r-8)=0



Domain of the equation: r-8)!=0

r∈R



We get rid of parentheses

4/r+8-4=0

We multiply all the terms by the denominator


8*r-4*r+4=0

We add all the numbers together, and all the variables

4r+4=0

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

4r=-4

r=-4/4

r=-1

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