Bonjour, Pouvez-m'aider ? J'ai reussi la première. Merci bien !

Bonjour,

A=

(3/6 - 2/6) *3/2  +1

= 1/6 * 3/2 +1

= 3/12 + 12/12

= 15/12 = 5/4

B=

(3/5)² = 9/25

9/25 * 20/9 = 20/25 = 4/5

C=

1/3 -1/6 = 2/6 -1/6 = 1/6

4-3/4 *1/6

=  4 - 3/24

= 96/24 -3/24

= 93/24 = 31/8

D=

3/4 -4 = 3/4 -  16/4 =  - 13/4

3/4 + 1/3 = 9/12 + 4/12 = 13/12

( -13/4) / ( 13/12)

= -13/4 * 12/13

= -4/12 = - 1/3