Answered

6
Calculer chaque expression.
a. C = - 4+ 7-(-5+ 3) + (-8-2)
b. D = 6 - (9-12) + (-10 + 4) – (-1 - 4)
Je n’ai pas compris quelqu’un peut m’aider svp

Sagot :

Bonjour,

C = - 4+ 7-(-5+ 3) + (-8-2)

D = 6 - (9-12) + (-10 + 4) – (-1 - 4)

il faut supprimer les parenthèses:

si

-(-) => +

-(+) => -

+(+) => +

+(-) => -

C = - 4+ 7-(-5+ 3) + (-8-2)

C = - 4+ 7+5- 3 -8-2 = -5

D = 6 - (9-12) + (-10 + 4) – (-1 - 4

6 -9+12 -10 + 4 +1 +4 = 8