Sagot :

Bonsoir

A = -13/8 - 5/24

= -39/24 - 5/24

= -39 - 5/24

= -44/24

A = -11 /6

B = 10/15 × 7/20

= 70/300

B = 7/30

C = 15/4 ÷ 21/16

= 15/4 × 16/21

= 240/84

C = 60/21

D = 5/4 - 7/4 × 7/8

= 5/4 - 49/32

= 40/32 - 49/32

D = -9/32