13=r/10

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Solution for 13=r/10 equation: 



13=r/10

We move all terms to the left:

13-(r/10)=0

We add all the numbers together, and all the variables

-(+r/10)+13=0

We get rid of parentheses

-r/10+13=0

We multiply all the terms by the denominator


-r+13*10=0

We add all the numbers together, and all the variables

-1r+130=0

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

-r=-130

r=-130/-1

r=+130

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