SOLUTION: how do I write an expression for this problem? 3 times the difference of 100 and 91t

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Question 946394: how do I write an expression for this problem?
3 times the difference of 100 and 91t
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
Exactly as described.
3%2A%28theDifferenceof100and91t%29
3%28100-91t%29
and you can be more strict and want the actual size of their difference and say,
3%2Aabs%28100-91t%29.