Bonjour jai vraiment besoin de toutes les reponses je comprend vraiment rien svp c'est noter​. svp

Réponse:

Bonsoir

Explications étape par étape:

G = 7/2 + 5/2 × 4/9

= 7/2 + 20/18

= 63/18 + 20/18

G = 83/18

H = (5 - 1/3) × (2/7 + 5/3)

= (15/3 - 1/3) × (6/21 + 35/21)

= 14/3 × 41/21

= 574 ÷ 7 /63 ÷ 7

H = 82/9

I = (4/3 + 3/7) ÷ (3/7 - 1/2)

= (28/21 + 9/21) ÷ ( 8/14 - 7/14)

= 37/21 × 14/1

= 518 ÷ 7/21 ÷ 7

I = 74/3

J = 5/-7 - 5/2 × 4/9

= 5/-7 - 10/9

= -45/63 - 70/63

J = -115/63

K = (1/2 - 1/3) ÷ 2/3 + 1

= (3/6 - 2/6) ÷ 2/3 + 3/3

= 1/6 ÷ 5/3

= 1/6 × 3/5

K = 1/10

A = 2/3 - 4/3 × 2/5

= 2/3 × 8/15

= 10/15 - 8/15

A = 2/15

B = 3 + 1 ÷ 1/3

= 3 + 1/1 × 3/1

= 6/1

B = 6