7r-20=r+4

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Solution for 7r-20=r+4 equation: 



7r-20=r+4

We move all terms to the left:

7r-20-(r+4)=0

We get rid of parentheses

7r-r-4-20=0

We add all the numbers together, and all the variables

6r-24=0

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

6r=24

r=24/6

r=4

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