7r+20=49r

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Solution for 7r+20=49r equation: 



7r+20=49r

We move all terms to the left:

7r+20-(49r)=0

We add all the numbers together, and all the variables

-42r+20=0

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

-42r=-20

r=-20/-42

r=10/21

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