bonsoir,
a)
540/2 =270
270/2 =135
135/3=45
45/3 =15
15/3 =5
2*2*3*3*3*5
336/2 =168
168/2 =84
84/2=42
42/2=21
21/3 =7
2*2*2*2*3*7
en commun: (PGDC)
2*2*3 =12
b)
252/2=126
126/2=63
63/3=21
2*2*3*3*7
315/3=105
105/3 =35
35/5=7
3*3*5*7
en commun:(PGDC)
3*3*7 => 63
c)
14/2=7
2*7
26/2 =13
2*13
2
2)
C'est fait!
2*2*3
3*3*7
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bonsoir,
a)
540/2 =270
270/2 =135
135/3=45
45/3 =15
15/3 =5
2*2*3*3*3*5
336/2 =168
168/2 =84
84/2=42
42/2=21
21/3 =7
2*2*2*2*3*7
en commun: (PGDC)
2*2*3 =12
b)
252/2=126
126/2=63
63/3=21
21/3 =7
2*2*3*3*7
315/3=105
105/3 =35
35/5=7
3*3*5*7
en commun:(PGDC)
3*3*7 => 63
c)
14/2=7
2*7
26/2 =13
2*13
en commun: (PGDC)
2
2)
C'est fait!
2*2*3
3*3*7