Bonjour,
écris avec une seule fraction décimale :
15+8/10 = 150/10 + 8/10 = 158/10 = (79 x 2)/(5 x 2) = 79/5
8+36/100 = 800/100 + 36/100 = 836/100 = (4 x 209)/(4 x 25) = 209/25
47+543/1000 = 47000/1000 + 543/1000 = 47543/1000
6+17/1000 = 6000/1000 + 17/1000 = 6017/1000
8+36/100 = Voir plus haut ?
91+107/1000 = 91000/1000 + 107/1000 = 91107/1000
1+8/100 = 100/100 + 8/100 = 108/100 = (4 x 27)/(4 x 25) = 27/25