若X/3+1与1/3*2X-7互为相反数,则X=________.
问题描述:
若X/3+1与1/3*2X-7互为相反数,则X=________.
答
X/3+1=-(1/3*2X-7)
X/3+1=7-2X/3
X/3+2X/3=7-1
X=6