3=r/105

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Solution for 3=r/105 equation: 



3=r/105

We move all terms to the left:

3-(r/105)=0

We add all the numbers together, and all the variables

-(+r/105)+3=0

We get rid of parentheses

-r/105+3=0

We multiply all the terms by the denominator


-r+3*105=0

We add all the numbers together, and all the variables

-1r+315=0

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

-r=-315

r=-315/-1

r=+315

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