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Meilleure réponse !
2014-02-03T23:18:48+01:00
Donne une fraction entre 3 sur 7 et 4 sur 7 dont le dénominateur est : 14, 21, 35, 70

3/7 = 3 x 2 / 7 x 2 = 6/14
3/7 = 3 x 3 / 7 x 3 = 9/21
3/7 = 3 x 5 / 7 x 5 = 15/35
3/7 = 3 x 10 / 7 x 10 = 30/70

4/7 = 4 x 2 / 7 x 2 = 8/14
4/7 = 4 x 3 / 7 x 3 = 12/21
4/7 = 4 x 5 / 7 x 5 = 20/35
4/7 = 4 x 10 / 7 x 10 = 40/70
2014-02-03T23:44:25+01:00
Fraction entre 3/7 et 4/7 dont le dénominateur est 14,21,35,70
3/7 = 3 x 2 / 7 x 2 = 6/14 ( =3/7)
3/7 = 3 x 3 / 7 x 3 = 9/21  (= 3/7)
3/7 = 3 x 5 / 7 x 5 = 15/35 (=3/7)
3/7 = 3 x 10 / 7 x 10 = 30/70 (= 3/7)

4/7 = 4 x 2 / 7 x 2 = 8/14 ( = 4/7 )
4/7 = 4 x 3 / 7 x 3 = 12/21 ( = 4/7 )
4/7 = 4 x 5 / 7 x 5 = 20/35 ( = 4/7 )
4/7 = 4 x 10 / 7 x 10 = 40/70 ( = 4/7 )