Réponses

  • x22
  • Modérateur Junior
2014-09-25T18:27:40+02:00
Bonjour,

B=7x3-4x2
=21-4x2
=21-8
=13

C=7x(6+5)
=7x11
=77

D=(9x5-15)x(1+6:3)
=(45-15)x(1+6:3)
=30x(1+2)
=30x3
=90

E= 19-(4+(6+8):2
=19-(4+(14):2
=19-(4+14:2)
=19-(4+7)
=19-11
=8