Xiaoqiang represents two positive numbers 5 and 6 with a point A.B on the number axis. He translates A.B to the left at the same time, with the same unit length The numbers of the two new points are opposite to each other

Xiaoqiang represents two positive numbers 5 and 6 with a point A.B on the number axis. He translates A.B to the left at the same time, with the same unit length The numbers of the two new points are opposite to each other

From the meaning of the title:
(6-5)/2=0.5
-(+0.5)=-0.5
6-0.5=5.5
(the way to make a fool of yourself. But the answer is right.)