ЧАСТИНА 1. Завдання 1 - 100 » 58-59
58. Виконай дії: 1) 4/11 + 3/11 – 2/11 = 5/11; 2) 42/5 + 4/5 = 46/5 = 51/5; 3) 1 – 8/13 = 13/13 – 8/13 = 5/13; 4) 72/17 – 54/17 = 619/17 – 54/17 = 115/17 59. Обчисли: 1) 5/19 + 7/19 – 4/19 = 8/19; 2) 75/7 + 6/7 = 711/7 = 84/7; 3) 1 – 9/13 = 13/13 – 9/13 = 4/13; 4) 97/13 – 69/13 = 820/13 – 69/13 = 211/13