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* czyli razy
4 4/5 : 1 7/9 = 24/5 : 16/9 = 24/5 * 9/16 = 216/80 = 2 56/80 = 2 7/8.
6 3/4 : 1 1/8 = 27/4 : 9/8 = 27/4 * 8/9 = 216/36 = 6.
2 5/6 : 12 3/4 = 17/6 : 51/4 = 17/6 * 4/51 = można skrócić 17 i 51 = 1/6 * 4/3 = 4/18 = 2/9.
5 1/7 : 2 2/21 = 36/7 : 42/21 = 36/7 * 21/42 = można skrócić 21 przez 7 = 36/1 inaczej po prostu 36 * 3/42 = 108/42 = 2 24/42 = 2 4/7.
3 1/5 : 1 1/3 : 4 4/5 = 16/5 : 4/3 : 24/5 = 16/5 : 3/4 : 5/24 = 16/5 * 3/4 * 5/24 =
= 4/5 * 1/4 * 5/8 = 20/160 = 1/8.