Задание 2. Найдите значение выражения: 1) (2 3/17 + 1/34) * 17; 2) (1 1/4 - 3/19) * 19; 3) 4 3/8 : (3/8 + 1/13); 4) 5 2/5 : (3 1/4 - 2 4/5)

1) (2 3/17 + 1/34) * 17 = (2 6/34 + 1/34) * 17 = (2 7/34) * 17 = (75/34) * 17 = 75/2 = 37,5 2) (1 1/4 - 3/19) * 19 = (5/4 - 3/19) * 19 = (95/76 - 12/76) * 19 = (83/76) * 19 = 83/4 = 20,75 3) 4 3/8 : (3/8 + 1/13) = 35/8 : (39/104 + 8/104) = 35/8 : (47/104) = 35/8 * 104/47 = 35 * 13 / 47 = 455/47 ≈ 9,68 4) 5 2/5 : (3 1/4 - 2 4/5) = 27/5 : (13/4 - 14/5) = 27/5 : (65/20 - 56/20) = 27/5 : (9/20) = 27/5 * 20/9 = 3 * 4 = 12