Réponse:
(-12)+(-4)=-16
(+12)+(-4)=+8
(-12)+(-8)=-20
(-8)+(+12)=+4
(+8)+(+4)=+12
1) -16
2)+8
3)-20
4)+4
5)+12
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Réponse:
(-12)+(-4)=-16
(+12)+(-4)=+8
(-12)+(-8)=-20
(-8)+(+12)=+4
(+8)+(+4)=+12
Réponse:
1) -16
2)+8
3)-20
4)+4
5)+12