Question

Приведите дроби к общему знаменателю: 3/10 и 2/3 4/5 и 4/9 1/2 и 1/7 5/8 и 7/11 4/25 и 9/10 5/6 и 4/9 3/20 и 2/15 3/4 и 9/10 3/9 и 15/25 4/6 и 6/8 2/4 и 6/9 21/98 и 20/84

Answer 1

3/10 u 2/3 - 9/30 u 20/30

4/5 u 4/9 - 36/45 u 20/45

1/2 u 1/7 - 7/14 u 2/14

5/8 u 7/11 - 55/88 u 56/88

4/25 u 9/10 - 8/50 u 45/50

5/6 u 4/9 - 15/18 u 8/18

3/20 u 2/15 - 9/60 u 12/60

3/4 u 9/10 - 15/20 u 18/20

3/9 u 15/25 - 75/225 u 135/225

4/6 u 6/8 - 16/24 u 18/24

2/4 u 6/9 - 18/36 u 24/36

21/98 u 20/84 - 147/588 u 140/588