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
