a为何值时,方程2x+1/3a=x-1的解满足2x+3=7?
问题描述:
a为何值时,方程2x+1/3a=x-1的解满足2x+3=7?
答
easy:
∵2x+3=7
∴x=2
把x=2带入方程2x+1/3a=x-1,得:
5/3a=1
∴a=5/3