RyanC

原帖由 twinsdragon 於 2007-10-13 05:40 PM 發表
' e4 [7 |( g- S& b3 g公仔箱論壇11x + 5y = 100 Formula 5

) }" D1 g: c, ~9 i11X must be 0 or multiple of 5
+ _5 U( o, G3 T, v2 Z- ?that meanz x must be 0 or 5