Bonjour,
+(-16) +4
= -12
7,1 +3,9=
= 11
(-5,5)+ (-3,5)
= -9
8,4 +(-7,4)
= 1
Réponse:
[tex]a = ( - 16) - ( - 4) \\ = - 16 + 4 \\ = - 12[/tex]
[tex]b = ( + 7.1) - ( - 3.9) \\ = 7.1 + 3.9 \\ = 11[/tex]
[tex]c = ( - 5.5) - ( + 3.5) \\ = - 5.5 - 3.5 \\ = - 9[/tex]
[tex]d = ( + 8.4) - ( + 7.4) \\ = 8.4 - 7.4 \\ = 1[/tex]
