13=r+78/9

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Solution for 13=r+78/9 equation: 



13=r+78/9

We move all terms to the left:

13-(r+78/9)=0

We add all the numbers together, and all the variables

-(+r+78/9)+13=0

We get rid of parentheses

-r+13-78/9=0

We multiply all the terms by the denominator


-r*9-78+13*9=0

We add all the numbers together, and all the variables

-r*9+39=0

Wy multiply elements

-9r+39=0

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

-9r=-39

r=-39/-9

r=4+1/3

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