Выполните действия : a)1 6/19+2 1/38 б)8 3/11-5 1/22 в)1 6/15-22/45 г)2-1 4/7 д)4 3/4 -(3/11+2 1/77) e)2 3/8 +1,25

Найдем значение данных в задании выражений:а) 1 6/19 + 2 1/38 = 25/19 + 77/38 = 50/38 + 77/38 = (50 + 77)/38 = 127/38 = 3 13/38;б) 8 3/11 - 5 1/22 = 91/11 - 111/22 = 182/22 - 111/22 = (182 - 111)/22 = 71/22 = 3 5/22;в) 1 6/15 - 22/45 = 21/15 - 22/45 = 63/45 - 22/45 = (63 - 22)/45 = 41/45;г) 2 - 1 4/7 = 2 - 11/7 = 14/7 - 11/7 = (14 - 11)/7 = 3/7;д) 4 3/4 - (3/11 + 2 1/77) = 2 13/28;1. 3/11 + 2 1/77 = 3/11 + 155/77 = 21/77 + 155/77 = (21 + 155)/77 = 176/77 = 16/7;2. 4 3/4 - 16/7 = 19/4 - 16/7 = 133/28 - 64/28 = (133 - 64)/28 = 69/28 = 2 13/28; е) 2 3/8 + 1,25 = 2 3/8 + 1 25/100 = 2 3/8 + 1 1/4 = 19/8 + 5/4 = 19/8 + 10/8 = (19 + 10)/8 = 29/8 = 3 5/8;