r+1+6r=-20

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Solution for r+1+6r=-20 equation: 



r+1+6r=-20

We move all terms to the left:

r+1+6r-(-20)=0

We add all the numbers together, and all the variables

7r+21=0

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

7r=-21

r=-21/7

r=-3

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