Плизз решите 10/21:5/6-2/9*3/4

Question

Плизз решите 10/21:5/6-2/9*3/4

Answer 1

10/21:5/6-2/9*3/4=17/42
10/21:5/6=10/21*6/5=4/7
2/9*3/4=1/6
4/7-1/6=24/42-7/42=17/42