Répondre :
-11 + 4 + 17 -9 -1 = - 11 + 21 - 9 -1 = 10 - 9 -1 = 0
- (11 + 4) + 17 -(9-1) = -15 + 17 -8 = 2 - 8 = -6
- (11 + 4 + 17) - (9-1) = -32 - 8 = - 40
Voilà
-11+4+17-9-1
-(11+4)+17-(9-1)
-(11+4+17)-(9-1)
svp besoin d'aide le plus rapidement possible
-11 + 4 + 17 -9 -1 = - 11 + 21 - 9 -1 = 10 - 9 -1 = 0
- (11 + 4) + 17 -(9-1) = -15 + 17 -8 = 2 - 8 = -6
- (11 + 4 + 17) - (9-1) = -32 - 8 = - 40
Voilà