Question

помогите с примерами ​

Answer 1

1) 1/3 + 2/9 = 3+2 / 9 = 5/9

2) 7/8 - 1/4 = 7-2 / 8 = 5/8

3) 6/5 * 30/42 = 6/7

4) 5/8 : 25/4 = 5/8 * 4/25 = 1/10

5) 3 1/4 + 4 3/12 = 7 3+3 / 12 = 7 6/12 = 7 1/2