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Calculer les expressions suivantes. a. (+29) - (+13) = + 92 b. (+16)-(-21) = -15 c. (-30) - (+14) = 24. d. (-27)-(-17) = 28 Calculer les expressions suivantes. a. (+11)-(-7,6)=​

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a. (+29) - (+13) = +16

b. (+16)-(-21) = +37

c. (-30) - (+14) = -44

. d. (-27)-(-17) = -10

Calculer les expressions suivantes.

a. (+11)-(-7,6)=​ 11 + 7,6 = 18,6

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