tolong dijawab yaa,dengan pake caranya

1/5+(2/3×3/5)-(1/6:2/3)-1/2
1/5+6/15-(1/6×3/2)-1/2
1/5+6/15-3/18-1/2 = 18/90+36/90-15/90-45/90
= -6/90 = -2/30