Aider moi svp ses én 5 eme svp j en ai besoin de 10m

Bonsoir,

34)
a. 12/12 - 7/13 = 5/13
b. 1/3 - 1/6 = 1 x 2 / 3 x 2 - 1/6 = 2/6 - 1/6 = 1/6
c. 9/4 - 5/12 = 9 x 9 / 4 x 9 - 5 x 3 / 12 x 3 = 81/36 - 15/36 = 66/36 = 6 x 11 / 6 x 6 = 11/6
d. 5/6 - 3/48 = 5 x 8 / 6 x 8 - 3/48 = 40/48 - 3/48 = 45/48 = 3 x 15 / 3 x 16 = 15/16
e. 9/7 - 64/63 = 9 x 9 / 7 x 9 - 64/63 = 81/63 - 64/63 = 17/63
f. 19/99 - 1/11 = 19/99 - 1 x 9 / 11 x 9 = 19/99 - 9/99 = 10/99