Réponses

  • Utilisateur Brainly
2012-06-04T17:24:20+02:00

R=(-5)x(-4)+(-3)-(-2):(-1)

R=20 -3-(+1)

R=20-3-1=20-4=16

 

E=(-8)x125x6,99x(-4)x25

E=-1000x6,99x(-100)=1000x699=699000


L=-6+7-(-8)+(-9)-10

    L=+1+8-9-10=+9-9-10=-10


2012-06-04T18:29:23+02:00

R= (-5)*(-4)+(-3)-(-2)/-1

=20-3-2

=15

 

E=(-8)*125*6.99*(-4)*25

=-1000 * 6.99 * (-100)

=-1000*699

=699 000

 

L=-6+7-(-8)+(-9)-10

=-6+7+8-9-10

=-25+15=10