Приведите дробь к общему знаменателю и выполните действие 1/2 +1/4 ,5/8+5/24 1/2+5/7. 4/5+1/6. 1/4+5/6. 3/20+7/25

1/2 + 1/4 = (1 * 2) / (2 * 2) + 1/4 = 2/4 + 1/4 = 3/4. 

5/8 + 5/24 = (5 * 3) / (8 * 3) + 5/24 = 15/24 + 5/24 = 20/24 = 5/6. 

1/2 + 5/7 = (1 * 7) / (2 * 7) + (5 * 2) / (7 * 2) = 7/14 + 10/14 = 17/14 = 1 3/14. 

4/5 + 1/6 = (4 * 6) / (5 * 6) + (1 * 5) / (6 * 5) = 24/30 + 5/30 = 29/30. 

1/4 + 5/6 = (1 * 3) / (4 * 3) + (5 * 2) / (6 * 2) = 3/12 + 10/12 = 13/12 = 1 1/12. 

3/20 + 7/25 = (3 * 5) / (20 * 5) + (7 * 4) / (25 * 4) = 15/100 + 28/100 = 43/100.