7r-1=30

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Solution for 7r-1=30 equation: 



7r-1=30

We move all terms to the left:

7r-1-(30)=0

We add all the numbers together, and all the variables

7r-31=0

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

7r=31

r=31/7

r=4+3/7

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