🚨 Lancement de la 3ème phase de tests : Je m'inscris au webinaire !

🚨 Lancement de la 3ème phase de tests :

Je m'inscris au webinaire !

On board our ship, the Star-Mathica, we collected $nb1$ tonnes $x=cl1$ between last season and this season. Given that we collected $nb2$ tonnes last season, how many $x$ tonnes did we collect this season?