4/r+5=15

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Solution for 4/r+5=15 equation: 



4/r+5=15

We move all terms to the left:

4/r+5-(15)=0



Domain of the equation: r!=0

r∈R



We add all the numbers together, and all the variables

4/r-10=0

We multiply all the terms by the denominator


-10*r+4=0

We add all the numbers together, and all the variables

-10r+4=0

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

-10r=-4

r=-4/-10

r=2/5

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