我写出正数形式【你全部添负号即可】1=1/2+1/3+1/6【这是思路,每个数都继续往下拆分】1/2=1/4+1/41/4=1/8+1/8,1/4=1/5+1/201/8=1/10+1/40于是1/2=1/5+1/8+1/10+1/20+1/401/3=1/4+1/121/12=1/15+1/60于是1/3=1/4+1/15...