Question

помогите!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

3- 4 1/5:(2 5/14-1 4/21)=3-4 1/5:(2 15/42-1 8/42)=3-4 1/5:1 7/42=3-4 1/5:1 1/6=3-21/5:7/6=3-21/5*6/7=3-18/5=3-3 3/5=-3/5