-16-2r=r-4

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Solution for -16-2r=r-4 equation: 



-16-2r=r-4

We move all terms to the left:

-16-2r-(r-4)=0

We get rid of parentheses

-2r-r+4-16=0

We add all the numbers together, and all the variables

-3r-12=0

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

-3r=12

r=12/-3

r=-4

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