Réponse :
Bonjour
35 / 42
35 = 5 × 7
42 = 2 × 3 × 7
35 / 42 = 5 × 7 / 2 × 3 × 7 = 5 / 6
20 / 52
20 = 2² × 5
52 = 2² × 13
20 / 52 = 2² × 5 / 2² × 13 = 5 / 13
63 / 99
63 = 3² × 7
99 = 3² × 11
63 / 99 = 3² × 7 / 3² × 11 = 7 / 11
121 / 99
121 = 11²
121 / 99 = 11² / 3² × 11 = 11 / 9
Voilà !
Bonjour,
35 = 7*5
42 = 2*3* *7
35/42:
en commun: 7
= 5/ 6
20 = 2*2*5
52= 2*2 *13
20/52
en commun: 2*2 = 4
= 5/13
63= 3*3*7
99 = 3*3 11
63/99
en commun: 3*3 = 9
= 7/ 11
121/99
121/ 11 = 11 (11*11)
99/9 = 11 (3*3*11)
en commun: 11
= 11/9
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Réponse :
Bonjour
35 / 42
35 = 5 × 7
42 = 2 × 3 × 7
35 / 42 = 5 × 7 / 2 × 3 × 7 = 5 / 6
20 / 52
20 = 2² × 5
52 = 2² × 13
20 / 52 = 2² × 5 / 2² × 13 = 5 / 13
63 / 99
63 = 3² × 7
99 = 3² × 11
63 / 99 = 3² × 7 / 3² × 11 = 7 / 11
121 / 99
121 = 11²
99 = 3² × 11
121 / 99 = 11² / 3² × 11 = 11 / 9
Voilà !
Bonjour,
35 = 7*5
42 = 2*3* *7
35/42:
en commun: 7
= 5/ 6
20 = 2*2*5
52= 2*2 *13
20/52
en commun: 2*2 = 4
= 5/13
63= 3*3*7
99 = 3*3 11
63/99
en commun: 3*3 = 9
= 7/ 11
121/99
121/ 11 = 11 (11*11)
99/9 = 11 (3*3*11)
en commun: 11
= 11/9