已知5X+3于-4X+4互为相反数,则X等于几
问题描述:
已知5X+3于-4X+4互为相反数,则X等于几
答
5X+3-4X+4=0
5X-4X=-3-4
X=-7
已知5X+3于-4X+4互为相反数,则X等于几
5X+3-4X+4=0
5X-4X=-3-4
X=-7