Réponses

2014-09-13T14:59:13+02:00


a=5/8- 7/6* 1/4

=5/8- 7*1/ 6*4

=5/8 - 7/24

=15/24 -7/24

=15-7/ 24

=8/24 =8*1/3*8

=1/3