1=r/13

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Solution for 1=r/13 equation: 



1=r/13

We move all terms to the left:

1-(r/13)=0

We add all the numbers together, and all the variables

-(+r/13)+1=0

We get rid of parentheses

-r/13+1=0

We multiply all the terms by the denominator


-r+1*13=0

We add all the numbers together, and all the variables

-1r+13=0

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

-r=-13

r=-13/-1

r=+13

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