Bonjour pouvez-vous vous m’aider pour le l’exercice 2 svp c’est pour un devoir toute à l’heure. Merci beaucoup !!

Bonjour,

A= 30/35 - 18/35 =12/35

B= 4/18 -3/18 = 1/18

C= 8/5

D= 6/ 60 = 1/10

E= 5/3 * 4/1 = 20/3

F= 1/7 * 2/5 = 2/35

G= (20/15  - 6/15) *3/7=

14/15 *3/7 = 42/105 = 14/35

H=

1+1/3 = 3/3+1/3 = 4/3

1/(4/3) +1=

1*3/4 +1 =

3/4 + 4/4 = 7/4

Réponse :

Explications étape par étape :

Bonjour

A =(6/7) - (3/5)

A = 30/35 - 21/35

A = (9/35)

B = 2/9 + (-1/6)

B = 2/9 - 1/6

B= 4/18 - 3/18

B= 1/18

C= 2×(4/5)

C = 8/5

D = (3/4) × 2/15

D = (3×2)/(4×15)

D =  (3×2)/(2×2×3×5)

D = 1/10

E = (5/3) / 4

E= (5/3) × (1/4)

E = 5/12

F = (1/7) / (5/2)

F = (1/7) × (2/5)

F = 2/35

G= (4/3 - 2/5) × 3/7

G = (20/15 - 6/15) × 3/7

G= 14/15 ×3/7

G = (14×3)/(15×7)

G = (2×7×3)/(3×5×7)

G = 2/5

H = [1 / (1 + 1/3)] + 1

H = [ 1 / (3/3 + 1/3)] + 1

H  = [1/4/3] + 1

H = 3/4 + 1

H= 3/4 + 4/4

H = 7/4