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?
a为何值时,方程2x+1/3a=x-1的解满足2x+3=7?
5点之前,帮帮啊
答
2x+3=7
那么x=2
x=2时,方程:2×2+1/3a=2-1
a=9