7,025-(11 8/11 +22 3/11 -33 38/39)×7,8 + (65 79/80-64)÷0,5=281/40-(129/11+245/11-1325/39)*39/5+(5279/80-64):1/2=281/40-1/39*39/5+159/80*2=281/40-1/5+159/40=54/5= 10 4/5
7,025-(11 8/11 +22 3/11 -33 38/39)×7,8 + (65 79/80-64)÷0,5=281/40-(129/11+245/11-1325/39)*39/5+(5279/80-64):1/2=281/40-1/39*39/5+159/80*2=281/40-1/5+159/40=54/5= 10 4/5