7=21/e

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Solution for 7=21/e equation: 



7=21/e

We move all terms to the left:

7-(21/e)=0



Domain of the equation: e)!=0

e!=0/1

e!=0

e∈R



We add all the numbers together, and all the variables

-(+21/e)+7=0

We get rid of parentheses

-21/e+7=0

We multiply all the terms by the denominator


7*e-21=0

We add all the numbers together, and all the variables

7e-21=0

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

7e=21

e=21/7

e=3

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