Activité 4 – Différence de deux nombres entiers

f) Calcule la valeur numérique des expressions suivantes si a = + 5 ; b = – 4 ; c = + 6 et d = – 10

a + d
= 5 + (– 10)
= – 5
– a + d

= – 5 + (– 10)
= – 15
b – c
= – 4 – 6
= – 10
– b + c
= – (– 4) + 6
= 4 + 6
= 10
d – b
= – 10 – (– 4)
= – 10 + 4
= – 6
– c – a
= – 6 – 5
= – 11
c – b
= 6 – (– 4)
= 6 + 4
= 10
– b – c
= – (– 4 ) – 6
= 4 – 6
= – 2
b – d
= – 4 – (– 10)
= – 4 + 10
= 6
d – c
= – 10 – 6
= – 16