решите уравнение:
(0.02у + 4 целых 1/2) /1.3+2.7=8.5

(0,02Y+4,5)/1.3+2,7=8,5(0,02Y+4,5)/1.3=8,5-2,7(0,02Y+4,5)/1.3=5,8(0,02Y+4,5)=5,8*1,3(0,02Y+4,5)=7,540,02Y=7,54-4,50,02Y=3,04Y=3,04/0.02152