36×57/79+57×43/79 能不能简算

36×57/79+57×43/79
=57*(36/79+43/79)
=57*79/79
=57*1
=57
再问： 0.9999×1.3-1.111×0.17 请问可以吗
再答： 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