Odpowiedź:
3/4 + 1/4 : 2/3 = 3/4 + 1/4 * 3/2 = 3/4 + 3/8 = 6/8 + 3/8 = 9/8 = 1 1/8
1/3 : 3 + 5 : 1/5 = 1/3 * 1/3 + 5 * 5 = 1/9 + 25 = 25 1/9
1 1/5 * 1 2/3 * 1/7 + (1 1/7)² = 6/5 * 5/3 * 1/7 + (8/7)² = 2 * 1/7 + 64/49 = 2/7 +
+ 1 15/49 = 14/49 + 1 15/49 = 1 29/49
1 5/12 : 1/2 - 2 1/2 = 17/12 * 2 - 2 1/2 = 17/6 - 2 1/2 = 2 5/6 - 2 3/6 = 2/6 = 2/3
Szczegółowe wyjaśnienie: