1=3-2/1
1=3-2/(3-2/1)
1=3-2/(3-2/(3-2/1))
1=3-2/(3-2/(3-2/・・・))

2=3-2/2
2=3-2/(3-2/2)
2=3-2/(3-2/3-2/2)
2=3-2/(3-2/3-2・・・))

よって1=2