Réponses

  • Utilisateur Brainly
2014-04-22T08:36:16+02:00
exercice 1
  2    3/4    1/4
  1/4   1/2    9/4
  3/4    7/4   1/2

calculs
2+3/4+1/4=3
1/4+1/2+9/4=3
3/4+7/4+1/2=3
2+1/4+3/4=3
3/4+1/2+7/4=3
1/4+9/4+1/2=3

EXERCICE 2
3/4   1/3    5/12
1/6   1/2    5/6
7/12  2/3    1/4


calculs
3/4+1/3+5/12=3/2
1/6+1/2+5/6=3/2
7/12+2/3+1/4=3/2
3/4+1/6+7/12=3/2
1/3+1/2+2/3=3/2
5/12+5/6+1/4=3/2