1) 3/15 - 2 7/25 = 15/75 - 2 21/75 = - 2 6/75 = - 2 2/25 = * 0,08
2) - 2 2/25 : 1 2/25 = - 52/25 : 27/25 = - 52/25 * 25/27 = - 52/27 = - 1 25/27
3) -1 25/27 + 1 4/13 = -1 325/351 + 1 108/351 = -217/351
ответ: -217/351
1) 3/15 - 2 7/25 = 15/75 - 2 21/75 = - 2 6/75 = - 2 2/25 = * 0,08
2) - 2 2/25 : 1 2/25 = - 52/25 : 27/25 = - 52/25 * 25/27 = - 52/27 = - 1 25/27
3) -1 25/27 + 1 4/13 = -1 325/351 + 1 108/351 = -217/351
ответ: -217/351