((10-1 2/3*1 11/2*2 1/5)*(1/4: 9/8+1/3-1 1/2): 3 1/3

((10-1 2/3*1 11/2*2 1/5)*(1/4:9/8+1/3-1 1/2):3 1/3=(10-(5•13•11)/(3•2•5)•((1•8)/(4•9)+1/3-3/2):10/3=(10-143/6)•(2/9+1/3-3/2):10/3=(60-143)/6 •(4+6-27)/18 :10/3=-(83•(-17)•3/(6•18•10)=1411/360=3 цел 331/360