-2r+6=20

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Solution for -2r+6=20 equation: 



-2r+6=20

We move all terms to the left:

-2r+6-(20)=0

We add all the numbers together, and all the variables

-2r-14=0

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

-2r=14

r=14/-2

r=-7

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