выполните деяния 1/8+7/12 3/4-1/6 5/9+3/4 23/40-3/8 9/35-328

1/8 + 7/12 = (1 * 3 + 7 * 2)/24 = (3 + 14)/24 = 17/24;

3/4 - 1/6 = (3 * 3 - 1 * 2)/12 = (9 - 3)/12 = 6/12 = 1/2;

5/9 + 3/4 = (5 * 4 + 3 * 9)/36 = (20 + 27)/36 = 47/36 = 1 11/36;

23/40 - 3/8 = (23 * 1 - 3 * 5)/40 = (23 - 15)/40 = 8/40 = 1/5;

9/35 - 328 = -327 26/35.