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Sagot :

Bonsoir,

a. 2/3 : 5

= 2/3 x 1/5

= 2/15

b.  5/7 : (- 4)

= 5/7 x - 1/4

= - 5/28

c. 5/6 : 7/- 11

= 5/6 x - 11/7

= - 55/42

d. 8 : 1/8

= 8 x 8

= 64

e. - 3/2 : - 5/7

= - 3/2 x - 7/5

= 21/10

f. 1/10 : (- 7/9)

= 1/10 x - 9/7

= - 9/70

g. 8/- 15 : - 4/5

= - 8/18 x - 5/4

= 40/72

= (8 x 5) / (8 x 9)

= 5/9.

h. 9/10 : (- 3)

= 9/10 x - 1/3

= - 9/30

= (3 x - 3) / (3 x 10)

= - 3/10

i. - 4/45 : 16/15

= - 4/45 x 15/16

= - 60/720

= (60 x - 1) / (60 x 12)

= - 1/12

j. - 5/9 : (- 15/18)

= - 5/9 x - 18/15

= 90/135

= (45 x 2) / (45 x 3)

= 2/3

k. 12 : 3/- 4

= 12 x - 4/3

= - 48/3

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

= - 16.

l. 1 : (- 7/4)

= 1 x - 4/7

= - 4/7.

Réponse :

question 53  dsl je suis sur ordit du coup je prend en photo ce que j'ai fais .

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