-3r-19=20-19r+19r

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Solution for -3r-19=20-19r+19r equation: 



-3r-19=20-19r+19r

We move all terms to the left:

-3r-19-(20-19r+19r)=0

We add all the numbers together, and all the variables

-3r-19-20=0

We add all the numbers together, and all the variables

-3r-39=0

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

-3r=39

r=39/-3

r=-13

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