-20=r/7

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Solution for -20=r/7 equation: 



-20=r/7

We move all terms to the left:

-20-(r/7)=0

We add all the numbers together, and all the variables

-(+r/7)-20=0

We get rid of parentheses

-r/7-20=0

We multiply all the terms by the denominator


-r-20*7=0

We add all the numbers together, and all the variables

-1r-140=0

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

-r=140

r=140/-1

r=-140

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