Answered

Effectuer les calculs suivants.
A= 2+(-8) +7+(-12)+(-5)+4+(-2)
B=-5+(-4) - 15 -(-6) + 7
C=-14 - 14+ 30+(-15)-(-20)
D=-4+ (-3) - 5 - 3+(-2)
E= 3 – 12 + 15 - 17 - 23

Sagot :

Réponse:

E=3+15-23-17-12

=18-52

E=-34

D=-4+(-3)-5-3+(-2)

=-4-3-5-3-2

D=-17

C=-14-14+30+(-15)-(-20)

=-28+30-15+20

=-28-15+30+20

=-43+50

C=7

B=-5+(-4)-15-(-6)+7

=-5-4-15+6+7

=-24+11

B=-13

A=2+(-7)+7+(-12)+(-5)+4+(-2)

= 2-7+7-12-5+4-2

=+7+4-12-5-7-2

=11-26

A =-15