4 8/9+6 7/8:(5 11/12-3 5/6)x1 1/3 помогите

4 8/9 + 6 7/8 : ( 5 11/12- 3 5/6) * 1 2/3=4 8/9 + 6 7/8 :( 5 11/12- 3 10/12) * 1 2/3= 4 8/9 + 6 7/8 :2 1/12* 1 2/3= 4 8/9 +33/10* 1 2/3=  4 8/9 +11/2=4 16/18+ 99/18=4 115/18=10 7/18