4r+20=8r

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Solution for 4r+20=8r equation: 



4r+20=8r

We move all terms to the left:

4r+20-(8r)=0

We add all the numbers together, and all the variables

-4r+20=0

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

-4r=-20

r=-20/-4

r=+5

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