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4х=5/7
х=5/7 : 4 = 5/7 * 1/4
х= 5/28
4 * 5/28 = 5/7
20/28=5/7
5/7=5/7
х: 2 2/15 = 1 9/16
х = 1 9/16 * 2 2/15 = 25/16 * 32/15 = (5*2)/(1*3) = 10/3
х = 3 1/3
3 1/3 : 2 2/15 = 1 9/16
10/3 : 32/15 = 1 9/16
10/3 * 15/32 = 1 9/16
(5*5)/(1*16) = 1 9/16
25/16 =1 9/16
1 9/16 = 1 9/16
х=5/7 : 4 = 5/7 * 1/4
х= 5/28
4 * 5/28 = 5/7
20/28=5/7
5/7=5/7
х: 2 2/15 = 1 9/16
х = 1 9/16 * 2 2/15 = 25/16 * 32/15 = (5*2)/(1*3) = 10/3
х = 3 1/3
3 1/3 : 2 2/15 = 1 9/16
10/3 : 32/15 = 1 9/16
10/3 * 15/32 = 1 9/16
(5*5)/(1*16) = 1 9/16
25/16 =1 9/16
1 9/16 = 1 9/16
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