2 целых 1/2:1/4= у:1 целая 1/5

Question

2 целых 1/2:1/4= у:1 целая 1/5

Answer 1

2 1/4 : 1/4 = y : 1 1/5
5/2 : 1/4 = y : 6/5
5/2 * 4 = y * 5/6
20/2 = 5/6y
10 = 5/6y
y = 10 : 5/6
y = 10 * 6/5
y = 12
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Answer 2

2 1/2:1/4=у:1 1/5
1/4у=1 1/5*2 1/2
1/4у=6/5*5/2
1/4у=3
у=3:1/4
у=12