(4,625-13/18*9/26): 2 1/4+2 1/2:1,25:6 3/4): 1 53/68 помогитее

1. (13/18)*(9/26)=0,252. 4,625-0,25=4,3753. 2 1/4=9/44. 9/4=2,255. 4,375:2,25=(35/18) 6. 2 1/2=5/27. 5/2=2,5 8. 2,5:1,25=29. 6 3/4=27/4 10. 27/4=6,7511. 2:6,75=(8/27) 12. (35/18)+(8/27)=(121/5413. 1 53/68=121/68) 13. 1 53/68=121/6814. (121/54) 121/68)=(34/27)