Question

вычислите дроби: 1/4+3/10
3/5-1/6
7/10-1/15
5/12+3/8

Answer 1

1/4+3/10= 5/20 + 6/20 =11/20

3/5-1/6 = 18/30 -  5/30 = 13/30

7/10  - 1/15 = 21/30 -  2/30=19/30

5/12  +3/8 = 10/24 + 9/24=19/24

Answer 2

В последнем примере: 5/12 + 3/8 = 10/24 + 9/24 = 19/24

Answer 3

Извините...