Question

Решите Плиз
6 3/4 - 2 5/6 - 1 3/8 
9 8/15 - 4 1/12 + 3 7/20 
7 5/8 + 3 2/3 - 8 3/16

Answer 1

6 3/4-2 5/6-1 3/8 = 27/4 - 17/6 - 11/8 = (162-68-33) это общий числитель, знаменатель 24, = 61/24 = 2 13/24;
9 8/15 - 4 1/12 + 3 7/20 = 143/15 - 49/12 + 67/20 = 532 - 245 +201 / 60 = 488/60 = 122/15 = 8 2/15;
7 5/8 + 3 2/3 - 8 3/16 =61/8+11/3-131/16 = 366+176-393 / 48 = 149/48 = 3 5/48