Bonsoir,
252
252/2 =126
126/2 =63
63/7 = 9
9/3 =3
2*2*7* 3*3
360
360/2 =180
180/2 = 90
90/2 =45
45/3 = 15
15/3 = 5
=> 2*2*2*3*3*5
en commun:
2*2 *3*3 = 36
252/36 = 7
360/36 = 10
252/360= 7/10
