Réponses

2014-09-11T21:31:40+02:00
2/3 + 5/3 x 4/7 = 2/3 + 20/21 = 2 x 7 / 3 x 7 + 20/21 = 14/21 + 20/21 = 34/21
Meilleure réponse !
  • Utilisateur Brainly
2014-09-11T21:38:56+02:00
2/3 + 5/3 x 4/7
= 2/3 + (5*4)/(3*7)
= 2/3 + 20/21
= (2*7)/(3*7) + 20/21
= 14/21 + 20/21
= 34/21