7=r-66

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Solution for 7=r-66 equation: 



7=r-66

We move all terms to the left:

7-(r-66)=0

We get rid of parentheses

-r+66+7=0

We add all the numbers together, and all the variables

-1r+73=0

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

-r=-73

r=-73/-1

r=+73

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