0.279*468+0.657*279-1.25*27.9
问题描述:
0.279*468+0.657*279-1.25*27.9
答
0.279*468+0.657*279-1.25*27.9
0.279*468+657*0.279-125*0.279
=0.279*(468+657-125)
=0.279*1000
=279