Question

помогите пожалуйста, ​

Answer 1

1) 9/10 * 20/27 = 1/1 * 2/3 = 2/3
2) 5/16 : 10/24 = 5/16 * 24/10 = 1/2 * 3/2 = 3/4
3) 5/9 * 1 7/20 = 5/9 * 27/20 = 1/1* 3/4 = 3/4
4) 2/3 + 3/4 = 8/12 + 9/12 = 17/12
5) 17/12 - 3/4 = 17/12 - 9/12 = 8/12 = 2/3