|
23#
發表於 2009-3-26 01:29 PM
| 只看該作者
pure math
' u% R1 G- g" |8 [$ o" J S& F: d, ~6 x2 q1 @% ? b& a
[250(80x+1)+2y-250]/2 = (250*80x+2y)/2 = (2000x+2y)/2 = 1000x+y# X! v2 b+ g; }. a
; l8 {2 ?& ^6 C5 r" [/ Yos.tvboxnow.comif x = 111 y = 2222, you number is 111-2222 |
|