64=2r+6r

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Solution for 64=2r+6r equation: 



64=2r+6r

We move all terms to the left:

64-(2r+6r)=0

We add all the numbers together, and all the variables

-(+8r)+64=0

We get rid of parentheses

-8r+64=0

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

-8r=-64

r=-64/-8

r=+8

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