(1,8*0,4-2 8/18: 6 1/3): (-0,8) решите

(1,8*0,4-2 8/18:6 1/3):(-0,8) = (0.72-2 2/9:6 1/3):(-0,8) =(0.72-20/9:19/3):(-0,8) =
=(0.72-20/9*3/19):(-0,8) =(0.72-60/171):(-0,8) =-0.72/0.8+60/171:0,8=-0,9+75/171=
=-9/10+75/171=-1539/1710+750/1710=-789/1710=-263/570