Bonjour,

Exercice 6

A = 3/(2*5) = 3/10

B = (3*4*7)/(5*2*4) = (3*7)/(5*2) = 21/10

C = (2*3*5)/(3*5*4) = 2/4 = 1/2

D = (3*3*4*2)/(4*3*5) = (3*2)/5 = 6/5

E = (3*5*9)/(3*2*5*5) = 9/(2*5) = 9/10

F = (4*4*6)/(3*4*6) = 4/3

G = (3*2*2*7*5)/(5*2*3*2*7) = 1

H = (12*11)/12 = 11

Exercice 7 :

J= (2*5)/(-1*2*3) = 5/(-3)

K = (-1*4*7*0,5)/(0,5*4*2) = (-7)/2

L = (-3*3*2*4)/(4*3) = (-3*2)/1 = -6

M= (3*4*3*7)/(7*2*4) = (3*3)/2 = 9/2

N = (-1 *3*5)/(5*3*4) = (-1)/4

P = (4*7*1,5)/(2,5*4*4) = (7*1,5)/(2,5*4) = 10,5/10

Q = (9*7*5*8)/(5*5*9*9) = (7*8)/(5*9) = 56/45

R  = (2*9*5*4*4)/(5*4*4*5) = (2*9)/5 = 18/5

Exercice 8

S = - 12/30 = -4/10 = -2/5

T = - 35/0,25 = 140

U = 316,8/396 = 0,8

Exercice 9 :

T = 28 750/2 760 = 28 75/ 276

U = - 562 275/337 365 = - 112 455/ 67 473 = - 37 485/22 491 = - 12 495/ 7 407 = - 4 165/2 469

Voilà, en espérant t'avoir aidé.e, bonne soirée.

Fiona (:

bonsoir

je ne sais pas faire le trait de diviser donc je vais mettre la barre/

A3X7/5X14

3X7/5X7X2 tu simplifie 7dans la numérateur et dans le dénominateur donc tu auras :

A =3/10

B 12X7/5X8

6X2X7/5X4X2

42/20=21/10

C=  2X15/3X20

2X5X3/3X5X2X2

C=1/2

D= 9X8/4X15

D=3X3X4X2/4X5X3

D=6/5

E =15X9/6X25

E=5X3X3X3/3X2X5X5

E=9/10

F= 16/3X6/24

F24

G =12/5X7/6X5/14

3X4/5X7/3X2X5/7X2

G= 1

H= 12X11/12=11

J = 2/3X5/-2= -5/3

K= -7/2

L= 9/4X8/3

L= 3X3/2X2X4X2X2

L=6

M= 3/2

N= 3/5X-5/4X2

N= -1/4