pure math公仔箱論壇$ u# P" w4 w- j: ]
6 a* ]0 q. S6 r6 ]5 I% l5.39.217.77[250(80x+1)+2y-250]/2 = (250*80x+2y)/2 = (2000x+2y)/2 = 1000x+y
7 B3 n& i. T' z" Z' ]tvb now,tvbnow,bttvbtvb now,tvbnow,bttvb* |2 x, [/ t2 v0 C9 `" Z
if x = 111 y = 2222, you number is 111-2222 |