16=4+2r

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Solution for 16=4+2r equation: 



16=4+2r

We move all terms to the left:

16-(4+2r)=0

We add all the numbers together, and all the variables

-(2r+4)+16=0

We get rid of parentheses

-2r-4+16=0

We add all the numbers together, and all the variables

-2r+12=0

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

-2r=-12

r=-12/-2

r=+6

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