Выполните деление: а) 4/9: 3/8; б)3/7: 9/14; в) 86/113: 43/51; г) 27/64: 9; д) 8: 2/3; е) 7: 3. напишите подробно и желательно быстро .

4/9 : 3/8 = 4/9 * 8/3 = 32/27 = 1 5/27,
3/7 : 9/14 = 3/7 * 14/9 = 2/3,
86/113 : 43/51 = 86/113 * 51/43 = 102/113,
27/64 : 9 = 27/61 * 1/9 = 3/61,
8 : 2/3 = 8/1 * 3/2 = 4 * 3 = 12,
7 : 3 = 7/3 = 2 1/3