Замените отношение дробных чисел равным ему отношением натуральных чисел
1) 2/5:1/3
2) 4/7:1/2
3) 5/6:3/8
4) 3 1/9:2 1/6
5) 1 5/12:2/15
6) 1/8:1 7/12 помогите пж пж пж
1) 2/5:1/3
2) 4/7:1/2
3) 5/6:3/8
4) 3 1/9:2 1/6
5) 1 5/12:2/15
6) 1/8:1 7/12 помогите пж пж пж
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Ответ:
1) 2/5 : 1/3 = 2/5*3/1 = 6/5 = 6:5
2) 4/7 : 1/2 = 4/7*2/1 = 8/7 = 8:7
3) 5/6 : 3/8 = 5/6*8/3 = 40/18 = 20/9 = 20:9
4) 31/9 : 21/6 = 28/9 : 13/6 = 28/9*6/13 = 168/117 = 168:117
5) 15/12 : 2/15 = 17/12 : 2/15 = 17/12*15/2 = 255/24 = 255:24
6) 1/8 : 17/12 = 1/8 : 19/12 = 1/8*12/19 = 12/152 = 3/38 = 3:38.