Réponses

2014-02-26T10:18:17+01:00
3/4 - 2/3 : 8/15= 3/4 - 30/24= 18/24 - 30/24= -12/24 = -1/2
2014-02-26T10:23:22+01:00


A= 3/4 - 2/3 : 8/15

A= 3/4 - 2/3 x 15/8

A= 3/4 - 30/24

A= 3x6/4x6 - 30/24

A= 18/24 - 30/2

A= -12/24

Tu simplifies par 12

A= -1x12 / 2x12

A= -1/2