Réponses

  • Utilisateur Brainly
2013-10-03T20:45:14+02:00
A=2*(-7)+(-3)*(-9)-2.5*4
  =-14+27-10
  =27-24
  =3

B=(-15)+(-6)*(-5)-3*(-12)

  =-15+30+36
  =66-15
  =51