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Sagot :

Réponse :

Bonjour :)

(Rappelles toi, a/b X c/d = (aXc) / (bXd) et a/b / c/d = a/b X d/c = (aXd) / (bXc)

A = (2/3) / (4/5)

= 2/3 X 5/4

= 10/12 = 5/6

___________

B = -2/3 / 5

= -2/3 X 1/5

= -2/15

___________

C = - 3/2  /  5

= - 3/2 X 1/5

= -3/10

___________

D = 3 / (2/5)

= 3 X 5/2

= 15/2

__________

E = 3/2  /  5

= 3/2 X 1/5

= 3/10

__________

F = (-3/2) / (-5/4)

= (3/2) / (5/4)                         (Parce -a/-b = a/b)

= 3/2 X 4/5

= 6/5

__________

G = 2/3 X 1/5

= 2/15

__________

H = 3/2 X 4/5

= 6/5

_________

I = 3/2 X 1/5

= 3/10

_________

J = 3 X 5/2

= 15/2

________

K = -3/2 X 1/5

= -3/10

________

L = 2/3 X 5/4

= 5/6

Bonjour,

Calculer:

A= (2/3) / (4/5)=  (2/3) x (5/4)= (2x5)/(3x4)= (1x5)/(3x2)= 5/6 simplifié 4 et 2

B= (-2/3)5= (-2x5)/5=(-2/3)x(5/1)= (-2x5)/3=  -10/3

C= (-3/2)/5= -3/2 x 1/5= (-3x1)/(2x5)= -3/10

D= 3/(2/5)= 3x 5/2= (3x5)/2= 15/2

E même raisonnement que le C

F même raisonnement que le A

G= (-2x1)/(3x5)= -2/15

Même raisonnement que G pour le H et I

J = (3x5)/2= 15/2

K= (-2x1)/(2x5)= ...calcule puis simplifie

Pareil pour le L.

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