16=3-r

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Solution for 16=3-r equation: 



16=3-r

We move all terms to the left:

16-(3-r)=0

We add all the numbers together, and all the variables

-(-1r+3)+16=0

We get rid of parentheses

1r-3+16=0

We add all the numbers together, and all the variables

r+13=0

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

r=-13

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