6x+4*2x-1+[44-(x+2x-1)*3]=171,求x.
问题描述:
6x+4*2x-1+[44-(x+2x-1)*3]=171,求x.
答
6x+4*2x-1+[44-(x+2x-1)*3]=171
6x+4*2x-1+【44-3x-6x+3】=171
6x+4*2x-1+44-3x-6x+3=171
6x+8x-1+44-3x-6x+3=171
6x+8x-3x-6x=171+1-44-3
5x=125
x=25