Сравнить дроби
3/5 и 21/40
7/12 и 39/48
1/17 и 3/51
3/8 и 5/6

1) 3/5 = 3*8/5*8 = 24/4024/40 > 21/402) 7/12 = 7*4/12*4 = 28/4828/48 < 39/483) 1/17 = 1*3/17*3 = 3/513/51 = 3/514) 3/8 = 3*3/8*3 = 9/245/6 = 5*4/6*4 = 20/249/24 < 20/24

1.>

2.<

3.=

4.<

Нормально?