aidez moi c'est juste le E et le F

e = ( 11/7 - 2/5)  x 24/7
e = ( 55/35 - 14/35) x 24/7
e =  41/35 x 24/7
e = 984 / 245


f = 25/15  x ( 1/18 + 1/24)
f = 25/15 x  ( 4/72 + 3/72)
f = 25/15 x 7/72
f =  175 / 1080
f =      35  / 216

(11/7 - 2/5) x 24/7
= (55/35 - 14/35) x 24/7
= 41/35 x 24/7
= 984/245

25/15 x (1/18 + 1/24)
= 25/15 x ( 24/432 + 18/432)
= 25/15 x 42/432
= 5/3 x 7/72
= 35/216