Ex 1 va rog rapid!Dau coroana!!

Răspuns:
3/41 × 8/9 - 1/2 × 3/41 + 17/9 × 3/41 =
3/41 × (8/9 - 1/2 + 17/9) =
3/41 × (25/9 - 1/2) =
3/41 × (50-9)/18 =
3/41 × 41/18 =
3/18 =
1/6