Bonjour,
A)
42/2 =21
21/3 = 7
42 = 2*3*7
18/2 = 9
9/3 = 3
18 = 2*3*3
B)
on compare:
2*3*7
2*3*3
Donc PGCD = 2*3 = 6
18/6 = 3
42/6 = 7
18/42 = 3/7
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Bonjour,
A)
42/2 =21
21/3 = 7
42 = 2*3*7
18/2 = 9
9/3 = 3
18 = 2*3*3
B)
on compare:
2*3*7
2*3*3
Donc PGCD = 2*3 = 6
18/6 = 3
42/6 = 7
18/42 = 3/7
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