(5 8/15 - 4 7/10)*2 2/3-5/9

Question

(5 8/15 - 4 7/10)*2 2/3-5/9

Answer 1

1) 83\15 - 47\10 = 166-141 \ 30 = 25\30 = 5\6

2) 5\6 * 8\3 = сокращаем= 20\9

3) 20\9 - 5\9 = 15\9 = 1 6\9 = 1 2\3