Réponses

  • Utilisateur Brainly
2013-10-06T14:46:31+02:00
A = - 3/8 : 5/2 + 13/40
    =(-3/8) x (2/5)+13/40
    =-6/40+13/40
    =7/40

 B = 8/3 + 2/3 : 5/7
     =8/3+2/3 x 7/5
     =8/3+14/15
     =40/15+14/15
     =54/15
     =18/5