Answered

Bonjour il y a un exercice auquel je ne comprend pas, merci au personne qui vont y répondre.
Calculer les expressions suivantes.

C=2sur3 + 1sur6 x 3sur2

D= (1sur9 + 1sur3) ÷ 2sur15

E= -3sur4 x 1sur2 - 1sur3 ÷ 4sur3

F=(1sur4 - 1sur3) x (3sur4 - 3sur2)



Voilà, merci au gens qui vont y répondre.

Sagot :

MAUDMARINE

Bonjour,

C = 2/3 + 1/6 x 3/2

C = 2/3 - 3/12

C = (2 x 4) / (3 x 4) - 3/12

C = 8/12 - 3/12

C = 5/12

D = (1/9 + 1/3) : 2/15

D = [1/9 + (1 x 3) / (3 x 3)] : 2/15

D = (1/9 + 3/9) : 2/15

D = 4/9 : 2/15

D = 4/9 x 15/2

D = 60/18

D = (6 x 10) / (6 x 3)

D = 10/3

E = - 3/4 x 1/2 - 1/3 : 4/3

E = - 3/8 - 1/3 x 3/4

E = - 3/8 - 3/12

E = (- 3 x 3) / (8 x 3) - (3 x 2) / (12 x 2)

E = - 9/24 - 6/24

E = - 15/24

E = (3 x - 5) / (3 x 8)

E = - 5/8

F = (1/4 - 1/3) x (3/4 - 3/2)

F = [(1 x 3) / (4 x 3) - (1 x 4) / (3 x 4)] x [3/4 - (3 x 2) / (2 x 2)]

F = (3/12 - 4/12) x (3/4 - 6/4)

F = - 1/12 x - 3/4

F = 3/48

F = (3 x 1) / (3 x 16)

F = 1/16.