Explications étape par étape:

E = 2/6 +( -5/3 × -3/2)

E = 2/6 + 15/6

E = 17/6

F = 7/3 × 3/2

F = (7×3)/(3×2)

F = 7/2

G = 1 + (1/2 × 5) - 3/4

G = 1 + 5/2 - 3/4

G = 4/4 + 10/4 - 3/4

G = 11/4

H = -3/4 × 27/17 × 34/18

H = (-3 × 3 × 9 × 2 × 17)/(2 ×2 ×17 ×2 × 9)

H = (-3 ×3)/(2 ×2)

H = -9/4