Réponses

Meilleure réponse !
2014-02-21T18:47:19+01:00
A = 5 + 4/3
A = 5 x 3 / 1 x 3 + 4/3
A = 15/3 + 4/3
A = 19/3

B= - 9/2 + 5/6
B = -9 x 3 / 2 x 3 + 5/6
B = -27/6 + 5/6
B = -22/6
B = 2 x -11 / 2 x 3
B = -11/3

C=-5/-14 * 21 / -10
C = -105/140
C = 35 x -3 / 35 x 4
C = - 3/4

D = 27/16 : 45 / 8

D = 27/16 x 8/45
D = 216/720
D = 72 x 3 / 72 x 10
D = 3/10
2014-02-21T18:50:29+01:00
A = 5 + 4/3 = 19/3
B= - 9/2 + 5/6 =  -11/3
C=-5/-14 * 21 / -10 = -3/4
D = 27/16 : 45 / 8 = 27/16 × 8/45 = 3/10 
:)