|
23#
發表於 2009-3-26 01:29 PM
| 只看該作者
pure math7 c9 Q4 j! ?* N5 X# t
. j& _7 ~ ]. g$ u5.39.217.76[250(80x+1)+2y-250]/2 = (250*80x+2y)/2 = (2000x+2y)/2 = 1000x+y5.39.217.762 q, h" j! \; K' W( m: e4 Z
公仔箱論壇; J j/ K- U! |
if x = 111 y = 2222, you number is 111-2222 |
|