Question

20-15 18/21 31/35-3/7 2/7*3/5 4/9*15/24

Answer 1

Ответ:

20- 15 18/21= 20-333/21=20*21/21-333/21=420/21-333/21=87/21

31/35-3/7=31/35-15/35=16/35

2/7*3/5=5/35=1/7

4/9*15/24=5/18

Answer 2

To solve the arithmetic expression you provided, let's break it down step by step:

1. 20 - 15 = 5
2. 18 / 21 = 6/7 (you can simplify this fraction if desired)
3. 31/35 - 3/7 = (31 - 15)/35 = 16/35
4. 2/7 * 3/5 = (2 * 3) / (7 * 5) = 6/35
5. 4/9 * 15/24 = (4 * 15) / (9 * 24) = 60/216 (you can simplify this fraction if desired)

So, the final result of the arithmetic expression is:

5 - 6/7 + 16/35 + 6/35 + 60/216