23.8: на два целых 4/5- два целых 2/3*(3.75-1.25)=

23.8:2.8=8.5 3.75-1.25=2.5 8/3•25/10=200/30=40/6=20/3 85/10-20/3=255-200/30=55/30=11/6=1 целая 5/6