Odpowiedź:
12 3/8 - (12 1/2 - 3/4) + 2 7/8 = 14 10/8 - (12 2/4 - 3/4) = 14 10/8 - (11 6/4 - 3/4) =
= 14 10/8 - 11 3/4 = 14 10/8 - 11 6/8 = 3 4/8 = 3 1/2
(9 1/8 + 5 2/5) - (1/20 + 1 1/10) = (9 5/40 + 5 16/40) - (1/20 + 1 2/20) =
= 14 21/40 - 1 3/20 = 14 21/40 - 1 6/40 = 13 15/40 = 13 3/8
1 3/5 : 2/3 + 3/4 * 1 1/3 - 1 1/5 * (1 1/6 - 8/9) = 8/5 * 3/2 + 3/4 * 4/3 - 6/5 * (1 3/18 - 16/18) = 12/5 + 1 - 6/5 * (21/18 - 16/18) = 2 2/5 + 1 - 6/5 * 5/18 = 3 2/5 - 1/3 =
= 3 6/15 - 5/15 = 3 1/15
4 1/2 : 1 1/8 - 3 5/8 = 9/2 : 9/8 - 3 5/8 = 9/2 * 8/9 - 3 5/8 = 4 - 3 5/8 = 3/8
100 - 12 2/3 : 5/6 = 100 - 38/3 * 6/5 = 100 - 76/5 = 100 - 15,2 = 84,8
Szczegółowe wyjaśnienie:
