7r-1=57

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Solution for 7r-1=57 equation: 



7r-1=57

We move all terms to the left:

7r-1-(57)=0

We add all the numbers together, and all the variables

7r-58=0

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

7r=58

r=58/7

r=8+2/7

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