下列各式都由方程x+3-2x=-2x-1变形得到,其中变形正确的是A.-x+3=-2x-1 B.x-2x+3=-1+2x C.x-2x+2x=-3-1 D.-x+3=-1+2x
问题描述:
下列各式都由方程x+3-2x=-2x-1变形得到,其中变形正确的是
A.-x+3=-2x-1 B.x-2x+3=-1+2x C.x-2x+2x=-3-1 D.-x+3=-1+2x
答
C.x-2x+2x=-3-1