Пошаговое объяснение:

((4,4-4,15+1 7/15 +7/60)÷3 2/3)/((3 1/2 -2,75)÷0,2-2 1/2)=((0,25+1 28/60 +7/60)•3/11)/((3,5-2,75) ÷0,2-2 1/2)=((1/4 +1 7/12)•3/11)/(0,75÷0,2-2 1/2)=((3/12 +1 7/12)•3/11)/(15/4 -2 2/4)=(1 5/6 •3/11)/(15/4 -10/4)=(11/6 •3/11)/(5/4)=1/2 •4/5=2/5=0,4