7r=8.1

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Solution for 7r=8.1 equation: 



7r=8.1

We move all terms to the left:

7r-(8.1)=0

We add all the numbers together, and all the variables

7r-8.1=0

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

7r=8.1

r=8.1/7

r=1+1/6.36363636364

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