因为:1/a+1/b=(a+b)/(a*b)所以:a=101/84,其整数部份就是1=[(1/2+1/9)+(1/5+1/6)+(1/3+1/8)+(1/4+1/7)]*15/22=11[(1/18+1/30)+(1/24+1/28)]*15/22=11*48[1/(18*30)+1/(24*28)]*15/22=24*15*[1/(18*30)]+24*15*[1/(24*28)]=2/3+15/28=101/84