设原数为a.
a * 0.1 = a - 43.65
0.1a = a - 43.65
a - 0.1a = 43.65
0.9a = 43.65
a =43.65/0.9=48.5
答：原数是48.5
一个数缩小到原来的十分之1后,新数比比原数少43.65,原数是多少?
设原数为a.
a * 0.1 = a - 43.65
0.1a = a - 43.65
a - 0.1a = 43.65
0.9a = 43.65
a =43.65/0.9=48.5
答：原数是48.5