12=r/10

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Solution for 12=r/10 equation: 



12=r/10

We move all terms to the left:

12-(r/10)=0

We add all the numbers together, and all the variables

-(+r/10)+12=0

We get rid of parentheses

-r/10+12=0

We multiply all the terms by the denominator


-r+12*10=0

We add all the numbers together, and all the variables

-1r+120=0

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

-r=-120

r=-120/-1

r=+120

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