Bonjour,
on cherche les diviseurs communs:
147 / 3=49
49/7= 7
3*7*7
168/2 = 84
84/2=42
42/2 = 21
21/3 =7
=> 2*2*2*3*7
en commun: 3*7 = 21
147/21 = 7
168/21 =8
=> 147/168 = 7/8
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Bonjour,
on cherche les diviseurs communs:
147 / 3=49
49/7= 7
3*7*7
168/2 = 84
84/2=42
42/2 = 21
21/3 =7
=> 2*2*2*3*7
en commun: 3*7 = 21
147/21 = 7
168/21 =8
=> 147/168 = 7/8