-5r+4+r=20

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



-5r+4+r=20

We move all terms to the left:

-5r+4+r-(20)=0

We add all the numbers together, and all the variables

-4r-16=0

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

-4r=16

r=16/-4

r=-4

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