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
