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bonjour quelqu'un pourrait m'aider. c'est le 50, 51 et 52​.

Bonjour Quelquun Pourrait Maider Cest Le 50 51 Et 52 class=

Répondre :

Réponse :

Explications étape par étape

Bjr

50 a

-7/6 *4/3 = -28/12 =-14/6 = -7/3

50 b

3/8 * 4/-3 = 12/ -24 = 6/-12 = 3/-6 = 1/-2

50c

-5/9 *  3/-8= -15/ -72 = -5/ -24=  5/24

51 a

1/5 /-3 = 1/ (5*-3)= 1/-15

51 b  

3/8/ (-6) = 3/(8*-6) = 3/-48 = 1/-16

51 c

(-15/8)/5 = -15 /(8*5) = -15/ 40 = -3/8

52 a

-3 /(6/5) = (-3*5)/6  = -15/6 = -5/2

52 b

(-3/6) / 5 = -3/ (5*6) = -3/ 30 = -1/10

52 c

6+1/5 = 30/5 + 1/5 = 31 /5

-7/5 *5/31 = -35/ 155- = -7/ 31

Par prudence, revérifie.

Bonsoir,

50)

a. - 7/6 : 3/4 = - 7/6 x 4/3 = - 28/18 = (2 x - 14) / (2 x 9 )= - 14/9

b. 3/8 : - 3/4 = 3/8 x - 4/3 = - 12/24 = (12 x - 1) / (12 x 2) = - 1/2.

c. - 5/9 : - 8/3 = - 5/9 x - 3/8 = 15/72 = (3 x 5) / (3 x 24) = 5/24.

51)

a. 1/5 : (- 3) = 1/5 x - 1/3 = - 1/15

b. 3/8 : (- 6) = 3/8 x - 1/6 = - 3/48 = (3 x - 1) / (3 x 16) = - 1/16.

c. - 15/8 : 5 = - 15/8 x 1/5 = - 15/40 = (5 x - 3) / (5 x 8) = - 3/8

52)

a. - 3 : 6/5 = - 3 x 5/6 = - 15/6 = (3 x - 5) / (3 x 2) = - 5/2.

b. - 3/6 : 5 = - 3/6 x 1/5 = - 3/30 = (3 x - 1) / (3 x 10) = - 1/10.

c. - 7/5 : (6 + 1/5) = - 7/5 : [(6 x 5) / (1 x 5) + 1/5] = - 7/5 : (30/5 + 1/5) = - 7/5 : 31/5 = - 7/5 x 5/31 = - 35/155 = (5 x - 7) / (5 x 31) = - 7/31.