If going east is positive and going west is negative, Xiao Ming starts from 0 and walks 9 meters to the east and then 12 meters to the west, what is Xiao Ming's current position
如果向东为正，向西为负，小明从0开始先向东走9米，再向西走12米，则小明现在的位置是多少
<result>3</result>