👤

Ex 2 svp reponder avant la rentrer

Ex 2 Svp Reponder Avant La Rentrer class=

Répondre :

Bonjour,

A = 1/3 + 5/3 x 7/2
A = 1/3 + 35/6
A = 1 x 2 / 3 x 2 + 35/6
A = 2/6 + 35/6
A = 37/6

B = 8/9 - 1/3 + 7/27
B = 8 x 3 / 9 x 3 - 1 x 9 / 3 x 9 + 7/27
B = 24/27 - 9/27 + 7/27
B = 31/27 - 9/27
B = 22/27

C = 2 + 2/7 x 5/8
C = 2 + 10/56
C = 2 x 56 / 1 x 56 + 10/56
C = 112/56 + 10/56
C = 122/56
C = 2 x 61 / 2 x 28
C = 61/28

D = 1 + 1/2 + 1/3
D = 1 x 6 / 1 x 6 + 1 x 3 / 2 x 3 + 1 x 2 / 3 x 2
D = 6/6 + 3/6 + 2/6
D = 10/6
D = 2 x 5 / 2 x 3 
D = 5/3