Question

как решать дроби 11 целых 7/12-10 целых 11/13 и 11 целых 7/12*10 целых 11/13

Answer 1

11 7/12-10 11/13=11 91/156-10 132/156=10 247/156-10 132/156=115/156

11 7/12*10 11/13=139/12*141/13=19599/156=125 99/156=125 33/52

Answer 2

11 7/12 -10 11/13 = 139/12 - 141/13  = 1807/156 - 1692/156 = 115/156
11 7/12  * 10 11/13 = 139/12  * 141/13 = 19599/156 = 125 99/156 =125 33/52