Bonjour vous pouvez m'aider le devoir est suivant:
lève les parnthèses et calcule
A: -7.5-(14.9-9)-(3.9+17.4-23.5)
B:111-(15.8-16.3+5.2)+(20.5-111)
C:(36-14.5)-(38-19.4+11)+(14.5-11)
D:(3.8-5.2+6.4)-(3.6-27.4+5.8)
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