Arithmetic or arithmetics (from the Greek word for number) is the oldest and most elementary branch of mathematics, used by almost everyone, for tasks ranging from simple day-to-day counting to advanced science and business calculations.
So it’s back to school using the 3 R’s if you want to find the coordinates to this cache. It is widely believed that Sir William Curtis, an alderman who became Lord Mayor of London, once presented a toast to the three Rs "reading, riting, and rithmetic" thereby betraying his illiteracy. In any event, the term was picked up by others and so used from the early 1800s on.
Use the numbers from 1 to 15 once only
North 39-17.ACJ
Use the number from 1 to 9 once only
The sum of the numbers in each box must be the same
West 84-19.FAA
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