36×57/79+57×43/79
=57*(36/79+43/79)
=57*79/79
=57*1
=570.9999×1.3-1.111×0.17请问可以吗0.9999×1.3-1.111×0.17=9.999*0.13-1.111*0.17=1.111*9*0.13-1.111*0.17=1.111*(1.17-0.17)=1.111*1=1.111