Aidez moi svp il faut faire ces calcules sous forme irréductible et détailler chaque étapes:

bonjour

d = - 5/9 - ( - 1/3) 
d = - 5/9 - ( - 3/9)
d = - 5/9 + 3/9 = - 2/9 

E = - 11/3 - [ 2 - ( 7/2 - 5/7)]
E = - 11/3 - [ 2 - ( 49/14 - 10/14)]
E = - 11/3 - ( 2 - 39/14)
E = - 11/3 - ( 28/14 - 39/14)
E = - 11/3 - ( - 11/14)
E = - 154/42 + 33/42
E = - 121/42

K = - 5/4 * - 7/-3 * - 1/11 
K =  - 5/4 * 7/3 * - 1/11
K = 35/132

O  = - 7/5  : - 2/9 
O  = - 7/5 * - 9/2
O = 63/10 

Bonsoir,

D = -5/9 - -1/3
D = -5/9 + 1/3
D = -5/9 + (1 x 3)/(3 x 3)
D = -5/9 + 3/9
D = -2/9

E = -11/3 - [2 - (7/2 - 5/7)]
E = -11/3 - [2/1 - ((7 x 7)/(2 x 7) - (5 x 2)/(7 x 2))]
E = -11/3 - [2/1 - (49/14 - 10/14)]
E = -11/3 - [(2 x 14)/(1 x 14) - 39/14]
E = -11/3 - (28/14 - 39/14)
E = -11/3 - -11/14
E = (-11 x 14)/(3 x 14) + (11 x 3)/(14 x 3)
E = -154/42 + 33/42
E = -121/42

K = -5/4 x -7/-3 x (-1/11)
K = (-5 x (-7))/(4 x (-3)) x (-1/11)
K = -35/12 x (-1/11)
K = (-35 x (-1)/(12 x 11)
K = 35/132

O = (-7/5)/(-2/9)
O = -7/5 x -9/2
O = (-7 x (-9))/(5 x 2)
O = 63/10