25=100/r

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Solution for 25=100/r equation: 



25=100/r

We move all terms to the left:

25-(100/r)=0



Domain of the equation: r)!=0

r!=0/1

r!=0

r∈R



We add all the numbers together, and all the variables

-(+100/r)+25=0

We get rid of parentheses

-100/r+25=0

We multiply all the terms by the denominator


25*r-100=0

We add all the numbers together, and all the variables

25r-100=0

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

25r=100

r=100/25

r=4

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