purpleapple 发表于 2013-8-14 23:25 age = 2013 - y (2x+5)*50 + 1763 - y = 100x +250 +1763 - y = 100x + 2013 - y
Randy@NZ 发表于 2013-8-14 23:32 原来你也如此蛋疼
joyle 发表于 2013-8-14 23:21
martin1919 发表于 2013-8-15 00:02 开心就好!!!!