Bonjour

calcule et donne le résultat sous la forme d'une fraction simplifiée ​:

2/5 + 2/5 = (2 + 2)/5 = 4/5

6/7 + 1/2 = (6 x 2)/(7 x 2) + (1 x 7)/(2 x 7) = 12/14 + 7/14 = (12 + 7)/14 = 19/14

3/5 - 1/4 = (3 x 4)/(5 x 4) - (1 x 5)/(4 x 5) = 12/20 - 5/20 = (12 - 5)/20 = 7/20

7/12 + 2/3 = 7/12 + (2 x 4)/(3 x 4) = 7/12 + 8/12 = (7 + 8)/12 = 15/12 = (3 x 5)/(3 x 4) = 5/4

10/3 - 1/6 = (10 x 2)/(3 x 2) - 1/6 = 20/6 - 1/6 = 19/6