3-r+16=31

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Solution for 3-r+16=31 equation: 



3-r+16=31

We move all terms to the left:

3-r+16-(31)=0

We add all the numbers together, and all the variables

-1r-12=0

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

-r=12

r=12/-1

r=-12

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