Вычеслите 1 - 5/17 (пять семнадцетых) 9 - 7/15 11 5/12 - 7 13 - 7 3/8 5 3/4 - 3 5/7 6 3/5 - 4 5/7 7 5/18 + 3 8/27 - 6 7/9 25 8 19 + 36 11/19 2 7/12 + 4 13/18

1 – (5/17) = (17/17) – (5/17) = 12/17. 9 – (7/15) = (135/15) – (7/15) = 128/15 = 8(8/15). 11(5/12) – 7 = (137/12) – (84/12) = 53/12 = 4(5/12). 13 – 7(3/8) = 12(8/8) – 7(3/8) = 5(5/8). 5(3/4) – 3(5/7) = (23/4) – (26/7) = (161/28) – (104/28) = 57/28 = 2(1/28). 6(3/5) – 4(5/7) = (33/5) – (33/7) = (231/35) – (165/35) = 66/35 = 1(31/35). 7(5/18) + 3(8/27) – 6(7/9) = (131/18) + (89/27) – (61/9) = (393/54) + (178/54) – (366/54) = 205/54 = 3(43/54). 25(8/19) + 36(11/19) = 61(19/19) = 62. 2(7/12) + 4(13/18) = (31/12) + (85/18) = (93/36) + (170/36) = 263/36 = 7(11/36).