幼稚提问find a number which differs from its reverse by twice the product of its dig

10a+b-10b-a=2ab
9a-9b=2ab
9a-2ab=9b
a=9b/(9-2b)
令b=1,2,4,5,6,7,8,9无解
只有b=3 a=9
所以答案为 93 39

谁帮忙翻译下先...

很简单 39 和 93

feeling_beyond正解