5- 3(цілих) 3/20 + 6(цілих) 4/15) - 1/3= ?

-(-8,5 - 3 3/20 + 6 4/15) - 1/3 = 8,5 + 3 3/20 - 6 4/15 - 1/3 = 5 1/20

1) 8,5 + 3 3/20 = 8 5/10 + 3 3/20 = 8 10/20 + 3 3/20 = 11 13/20
2) 11 13/20 - 6 4/15 = 11 39/60 - 6 16/60 = 5 23/60
3) 5 23/60 - 1/3 = 5 23/60 - 20/60 = 5 3/60 = 5 1/20