До 4 примеров N507 N508

Question

До 4 примеров N507 N508

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Answer 1

1) 1/3 : 1/9 = 1/3 × 9/1 = 3
2) 3/8 : 1/2 = 3/8 × 2/1 = 3/4
3) 4/9 : 4/8 = 4/9 : 8/4 = 1/2
4) 1/12 : 1/6 = 1/12 : 6:1 = 1/2

1) 3 : 1/9 = 3/1 : 9/1 = 18
2)6 : 1/11 = 6/1 : 11/1 = 66
3)4 : 3/8 = 4/1 : 8/3 = 32/3 = 10 2/3
4) 5 : 5/7 = 5/1 : 7/5 = 7