1=r/7-2

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Solution for 1=r/7-2 equation: 



1=r/7-2

We move all terms to the left:

1-(r/7-2)=0

We get rid of parentheses

-r/7+2+1=0

We multiply all the terms by the denominator


-r+2*7+1*7=0

We add all the numbers together, and all the variables

-1r+21=0

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

-r=-21

r=-21/-1

r=+21

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