75=r*30

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Solution for 75=r*30 equation: 



75=r*30

We move all terms to the left:

75-(r*30)=0

We add all the numbers together, and all the variables

-(+r*30)+75=0

We get rid of parentheses

-r*30+75=0

Wy multiply elements

-30r+75=0

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

-30r=-75

r=-75/-30

r=2+1/2

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