19r-1=-20

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Solution for 19r-1=-20 equation: 



19r-1=-20

We move all terms to the left:

19r-1-(-20)=0

We add all the numbers together, and all the variables

19r+19=0

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

19r=-19

r=-19/19

r=-1

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