January 2021 1 146 Report
Bonjour,
Pouvez vous m'aider?
Je n'arrive pas a ces question:

Calcule les sommes algébriques suivantes :
a. – 3 + (– 23) + 7 – (– 5) + 3
b. – 7 + 4,5 – 25 + 20,5
c. 17 – (29 – 40) + (– 16) + 5
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