bonjour
fractions < 1
1/6 ; 6/9 ; 1/3 ; 25 /100 ; 2/8
fraction = 1
3/3 ; 5/5
fraction > 1
9/5 ; 1 + 1 /4 : 4/2 ; 8/6
premier = 5 x 50 = 250
proportion = 250/450 = 5 / 9 = 45/81
second = 24 + 46 = 70
70/90 = 7 /9 = 63/81
troisième = 2 x 20 x 19 = 760
760/810 = 76/81
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bonjour
fractions < 1
1/6 ; 6/9 ; 1/3 ; 25 /100 ; 2/8
fraction = 1
3/3 ; 5/5
fraction > 1
9/5 ; 1 + 1 /4 : 4/2 ; 8/6
premier = 5 x 50 = 250
proportion = 250/450 = 5 / 9 = 45/81
second = 24 + 46 = 70
70/90 = 7 /9 = 63/81
troisième = 2 x 20 x 19 = 760
760/810 = 76/81