-r/7=1

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Solution for -r/7=1 equation: 



-r/7=1

We move all terms to the left:

-r/7-(1)=0

We multiply all the terms by the denominator


-r-1*7=0

We add all the numbers together, and all the variables

-1r-7=0

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

-r=7

r=7/-1

r=-7

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