16-7/r=21

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Solution for 16-7/r=21 equation: 



16-7/r=21

We move all terms to the left:

16-7/r-(21)=0



Domain of the equation: r!=0

r∈R



We add all the numbers together, and all the variables

-7/r-5=0

We multiply all the terms by the denominator


-5*r-7=0

We add all the numbers together, and all the variables

-5r-7=0

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

-5r=7

r=7/-5

r=-1+2/5

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