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Mathematics, 07.09.2019 18:20 Z0D

Calculer les expressions suivantes (après les avoir simplifiés) aidez moi svp urgent ❤️
a=(-3,5)+(7,2)+(-4,,5)+(+8,4)+(-7,8 )
b=-5+12,3+4,7-13-18
c=(+6,,5)+(-3)+(+8,+11)+4,2
d=-12+5,3+6-13,7+9-4,2

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Calculer les expressions suivantes (après les avoir simplifiés) aidez moi svp urgent ❤️
a=(-3,...
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