2x-(x+1)÷2=2+(x+1)÷22x-0.5x-0.5=2+0.5x+0.51.5x-0.5=0.5x+2.51.5x-0.5x=2.5+0.5x=3
2x-(x+1)/2=2+(x+1)/22x-(x+1)/2-(x+1)/2=22x-(x+1)=22x-x-1=2x=1+2x=3
解:2x-(x+1)÷2=2+(x+1)÷24x-(x+1)=4+(x+1)4x-x-1=4+x+13x-x=5+12x=6x=3
3啊