10F 1991
This is a 10 Franc ("10F") coin from France ("RF" stands for "Republique Francaise", which is French for the French Republic)
2, 3 Euro
10f+deepestpart 10f+underground lake
If you mean: 9f+10f-12f then it is 7f simplified
A Liberte Egalite Fraternite 10 franc coin from 1988 typically has a nominal value of 10 francs. As a collectible item, its worth could vary depending on its condition, rarity, and demand among collectors. It’s best to research current market trends or consult a coin appraiser for an accurate valuation.
If the coin says Confederatio Helvetica, it is from Switzerland.
No
a coin that says Regina on it
f-18=48-10f 11f-18=48 11f=66 f=6
If 14e + 10f = 12f, the first step towards simplifying the expression is subtracting 10f from each side. You therefore have 14e = 2f, which you can divide by 2 to isolate f. Solution: 7e = f
USD10k