Е)
1) 3/4 * 1 1/4 = 3/4 * 5/4 = 15/16
2) 15/16 * 7 1/2 = 15/16 * 15/2 = 225/32
3) 225/32 * 2 1/4 = 225/32 * 9/4 = 2025/128
4) 2025/128 : 7 1/2 = 2025/128 * 2/15 = 135/64 = 2 7/64
ответ: 2 7/64
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ж)
1) 3/7 : 1 1/7 = 3/7 * 7/8 = 3/8
2) 3/8 : 1 7/8 = 3/8 * 8/15 = 1/5
3) 1/5 : 11/25 = 1/5 * 25/11 = 5/11
4) 5/11 : 1 1/22 = 5/11 * 22/23 = 10/23
5) 10/23 : 3 2/11 = 10/23 * 11/35 = 22/161
ответ: 22/161
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з)
1) 15/16 : 1 1/48 = 15/16 * 48/49 = 45/49
2) 45/49 : 2 1/7 = 45/49 * 7/15 = 3/7
3) 3/7 : 2 2/49 = 3/7 * 49/100 = 21/100
4) 21/100 : 24/125 = 21/100 * 125/24 = 35/32 = 1 3/32
ответ: 1 3/32