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23#
發表於 2009-3-26 01:29 PM
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pure math5.39.217.76# w& _+ J/ u! }2 c9 Z+ u# b R
tvb now,tvbnow,bttvb' o/ f% u2 Q2 L0 g4 n1 d
[250(80x+1)+2y-250]/2 = (250*80x+2y)/2 = (2000x+2y)/2 = 1000x+y; I3 k1 N0 t: _* t8 a
8 r( z& {3 i! z) c% M公仔箱論壇if x = 111 y = 2222, you number is 111-2222 |
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