有d數既野唔明(equation)傻仔=聰明既人??

開學果陣 我個班有d傻仔
我見到d傻仔同傻仔好friend d聰明既人同聰明既人好friend
於是我諗:(傻仔=A 聰明既人=B)
________________A+A=朋友 and B+B=朋友
____________________A+A=朋友=B+B
______________________A+A=B+B
_______________________2A=2B
____________________2A / 2=2B / 2 ( / =除號)
________________________A=B
傻仔=聰明既人?????????????????
點解????????????????