Kto może zrobic zadanie 38 bardzo proszę o pomoc... Chodzi mi o odpowiedzi i rozwiazania!!!!

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zad.37 a) 6/21 : 9/14 = 6/21 * 14/9 = 2/3 * 2/3 = 4/9 8/14 : 4/7 = 8/14 * 7/4 = 2/2 * 1 = 1 12 : 8/11 = 12 * 11/8 = 3 * 11/2 = 33/2 = 16 1/2 15 : 5/13 = 15 * 13/5 = 3 * 13 = 39 b) 2 2/5 : 3/25 = 12/5 * 25/3 = 4 * 5 = 20 2 4/7 : 1 3/5 = 18/7 : 8/5 = 18/7 * 5/8 = 9/7 * 5/4 = 45/28 = 1 17/28 4 2/7 : 3 1/8 = 30/7 : 25/8 = 30/7 * 8/25 = 6/7 * 8/5 = 48/35 = 1 13/35 4 2/3 : 4/9 = 14/3 * 9/4 = 7 * 3/2 = 21/2 = 10 1/2 c) 2/9 : 7 = 2/9 * 1/7 = 2/63 3/7 : 6 = 3/7 * 1/6 = 3/42 = 1/14 4 1/6 : 15 = 25/6 * 1/15 = 5/6 * 1/3 = 5/18 8 1/4 : 11 = 33/4 * 1/11 = 3/4   zad.38 a) 2 1/3 * 6 - 3 2/3 : 2 1/6 = = 7/3 * 6 - 11/3 : 13/6 = 7 * 2 - 11/3 * 6/13 = = 14 - 11 * 2/13 = 14 - 22/13 = 14 - 1 9/13   = 12 4/13 b) 2 1/4 * 8 - 3 1/2 : 2 1/6 = 9/4 * 8 - 7/2 : 13/6 = = 9 * 2 - 7/2 * 6/13 = 18 - 7 * 3/13 = 18 - 21/13 = 18 - 1 8/13 = 16 5/13 c) 3 1/4 : 1/4 + 2 1/2 * 1/5 = = 13/4 * 4 + 5/2 * 1/5 = 13 + 1/2 = 13 1/2 d) (12 1/3 - 1/2) * 9 = = (12 2/6 - 3/6) * 9 = ( 11 8/6 - 3/6) * 9 = 11 5/6 * 9 = = 71/6 * 9 = 71/2 * 3 = 213/2 = 106 1/2 e) 2 1/2 * 3 1/3 + 2 1/2 : 1 1/4 = = 5/2 * 10/3 + 5/2 : 5/4 = 5 * 5/3 + 5/2 * 4/5 = = 25/3 + 5/2 * 4/5 = 8 1/3 + 2 = 10 1/3 f) (7 2/3 - 5 5/6) : 1 1/3 = = (7 4/6 - 5 5/6) : 4/3 = (6 10/6 - 5 5/6) * 3/4 = = 1 5/6 * 3/4 = 11/6 * 3/4 = 11/2 * 1/4 = 11/8 = 1 3/8