-4=r/20=5

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Solution for -4=r/20=5 equation: 



-4=r/20=5

We move all terms to the left:

-4-(r/20)=0

We add all the numbers together, and all the variables

-(+r/20)-4=0

We get rid of parentheses

-r/20-4=0

We multiply all the terms by the denominator


-r-4*20=0

We add all the numbers together, and all the variables

-1r-80=0

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

-r=80

r=80/-1

r=-80

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