4r/(16+8r)=5

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Solution for 4r/(16+8r)=5 equation: 



4r/(16+8r)=5

We move all terms to the left:

4r/(16+8r)-(5)=0



Domain of the equation: (16+8r)!=0

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

8r!=-16

r!=-16/8

r!=-2

r∈R



We add all the numbers together, and all the variables

4r/(8r+16)-5=0

We multiply all the terms by the denominator


4r-5*(8r+16)=0

We multiply parentheses

4r-40r-80=0

We add all the numbers together, and all the variables

-36r-80=0

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

-36r=80

r=80/-36

r=-2+2/9

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