Hello, we’ll going to give you our first math exercice. Good luck!!!
Jean-Jacques likes calculating the sea level. He knows that the sea level in Mexico multiplied by 2 plus the sea level in Toronto times 3 is equal to 1. The sea level in Poitiers plus the sea level in Toronto is equal to 2. Finally the sea level in Mexico plus the sea level in Poitiers times 3, plus the sea level in Toronto multiplied by 2 is equal to 3. Search the sea level of the 3 cities.
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