(4,5-1/3):2/9-(3,5+1/3пж помогите !!!!!!!!!!!!!!!!!!!!!!!!!!!!

1) 4 5/10 - 1/3= 4 15/30 - 10/30= - 4 5/30
2)-4 5/30: 2/9 = -125/30 : 2/9= - 25/4
3)3,5 + 1/3= 3 5/10 + 1/3= 3 15/30 + 10/30= 3 25/30
4) -25/4 : 3 25/30= - 75/26= -2 22/26