Odpowiedź:
2 1/2 - (2/3)² + 1 5/9 : 1 1/6 = 2 1/2 - 4/9 + 14/9 : 7/6 =
= 2 1/2 - 4/9 + 14/9 * 6/7 = 2 1/2 - 4/9 + 2/3 * 2 = 2 1/2 - 4/9 + 4/3 =
= 2 9/18 - 8/18 + 24/18 = 2 1/18 + 24/18 = 2 25/18 = 3 7/8 = 3,875 ≈ 3,88
2 1/2 = 2,5
4/9 = 0,444... ≈ 0,44
1 5/9 = 1,5555... ≈ 1,6
1 1/6 = 0,1666... ≈ 1,17
2,5 - (0,44)² + 1,6 : 0,17 = 2,5 - 0,1936 + 1,37 = 2,3064 + 1,37 =
= 3,6764 ≈ 3,68
