bonjour pouvez vous m’aider pour mon exercice de math je vous le met en pièce jointe :) ? merci d’avance

Bonsoir ! J'espère vous aider !

Réponse :

Exercice 68 :

A = 4/5 + 3/10

A = 4*2/5*2 + 3/10

A = 8/10 + 3/10

A = 11/10

B = 7/10 + 3/100

B = 7*10/10*10 + 3/100

B = 70/100 + 3/100

B = 73/100

C = 2/21 + 8/7

C = 2/21 + 8*3/7*3

C = 2/21 + 24/21

C = 26/21

D = 5/3 - 20/33

D = 5*11/3*11 - 20/33

D = 55/33 - 20/33

D = 35/33

E = 3/8 + 5/16

E = 3*2/8*2 + 5/16

E = 6/16 + 5/16

E = 11/16

F = 34/63 - 2/9

F = 34/63 - 2*7/9*7

F = 34/63 - 14/63

F = 20/63

G = 4 + 3/7

G = 4*7/1*7 + 3/7

G = 28/7 + 3/7

G = 31/7

H = 48/25 - 1

H = 48/25 - 1*25/1*25

H = 48/25 - 25/25

H = 23/25

I = 8/9 - 3/4

I = 8*4/9*4 - 3*9/4*9

I = 32/36 - 27/36

I = 5/36