x=3代入方程得
6+m/2=8
即m/2=2
m=4不对呀这题是选择题：A . 2B . 22 C . -2D . 10那可能你题目应加个括号吧？(2x+m)/2=4(x-1)代入x=3,得(6+m)/2=86+m=16m=10选Dthank you~~~