100/20=65/x

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Solution for 100/20=65/x equation: 



100/20=65/x

We move all terms to the left:

100/20-(65/x)=0



Domain of the equation: x)!=0

x!=0/1

x!=0

x∈R



We add all the numbers together, and all the variables

-(+65/x)+100/20=0

We add all the numbers together, and all the variables

-(+65/x)+5=0

We get rid of parentheses

-65/x+5=0

We multiply all the terms by the denominator


5*x-65=0

We add all the numbers together, and all the variables

5x-65=0

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

5x=65

x=65/5

x=13

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