(-14)-(-23)+(+9)-(+21)
Mathématiques
inco6262
Question
(-14)-(-23)+(+9)-(+21)
1 Réponse
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1. Réponse jpmorin3
(-14)-(-23)+(+9)-(+21) = -(- = + ; +(+ = + ; -(+ = - ; +(- = -
- 14 + 23 + 9 - 21 =
23 + 9 - 14 - 21 =
32 - 35 = -3