bonjour,

a)

-38/5 = -7,6

-38/5 < -7,48

b)

27 pi = 3,14 *27 =84,78

27pi < 84, 823

c)

104 348/ 33 215 =3,141592654

pi = 3,141592653

pi <  104 348/ 33 215

d)

13 860/ 33 461 = 0,414213562

33 461 / 80 782 =0,414213562

13 860/ 33 461 = 33 461 / 80 782