42=r+5r

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Solution for 42=r+5r equation: 



42=r+5r

We move all terms to the left:

42-(r+5r)=0

We add all the numbers together, and all the variables

-(+6r)+42=0

We get rid of parentheses

-6r+42=0

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

-6r=-42

r=-42/-6

r=+7

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