Aider moi svp c l'exo 57

on peut avoir :   1/6 = 1/12 + 1/12

ou 1/6 = 2/24 + 2/24

1/3+1/6 = 2/6 + 1/6 = 3/6 = 1/2   ok

1/4 + 1/12 = 3/12 + 1/12 = 4/12 = 1/3   ok

et

1/5 + 1/20 = 4/20 + 1/20 = 5/20 = 1/4   ok

1/5 = 1/6 + 1/30

et 1/6 + 1/30 = 5/30 + 1/30 = 6/30 = 1/5 ok

1/n = 1/(n+1) + 1/n(n+1)