xy-2/3y-2/3-1/2x+1/2xy-1合并同类项的值
问题描述:
xy-2/3y-2/3-1/2x+1/2xy-1合并同类项的值
答
原式=(1+1/2)XY-1/2X-2/3Y+(-2/3-1)
=3/2XY-1/2X-2/3Y-5/2.