AB = A + BB(A-1) = AB = A/(A-1)A 整数 B 小数随便取A = 0 B=0 不对A = 1 B无解A = 2 B = 2 不对A = 3 B = 1.5A = 4 B = 4/3不对A = 5 B = 1.25A = 6 B = 1.2....
