Bonjour serait il possible m aider voici le probleme: simplifier les expressions numériques suivantes, puis calculer:
A=(+12)-(-6)+(-2)+(+7)-(+8)
B= (-20)-(+14)+(+40)+(-12)-(-10)
C= (-7,1)-(-3,2)-(+1,5)(+8,4)
merci
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