5+8=13r,r=

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Solution for 5+8=13r,r= equation: 



5+8=13r.r=

We move all terms to the left:

5+8-(13r.r)=0

We add all the numbers together, and all the variables

-(+13r.r)+5+8=0

We add all the numbers together, and all the variables

-(+13r.r)+13=0

We get rid of parentheses

-13r.r+13=0

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

-13r.r=-13

r=-13/1

r=-13

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