Discrete Mathematics Level pending

In a kingdom, the villagers use a different type of currency. There are copper, brass, silver and gold coins with different values. You found that relationship between the coins:

10 copper coins = 1 brass coin

7 brass coins = 1 silver coin

12 silver coins = 1 gold coin.

You found in your pockets some amount of coins and you wanted to minimize the number of coins you have by changing some coins to another.

You have 42 copper coins, 11 brass coins and 14 silver coins.

After you changing your coins to another you will finish with:


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