(1/8+1/9+1/+1/10+1/11)*(1/9+1/10+1/11+1/12)-(1/8+1/9+1/10+1/

（1/8+1/9+1/10+1/11）*（1/9+1/10+1/11+1/12）-（1/8+1/9+1/10+1/11+ (1/8+1/9+1/+1/10+1/11)*(1/9+1/10+1/11+1/12)-(1/8+1/9+1/10+1/ 计算,(1/8+1/9+1/10+1/11)x(1/9+1/10+1/11+1/12)-(1/8+1/9+1/10+1/ (1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9+1/10+1/11+1/12+1/13+1/14+1/ （1）8*9/1+9*10/1+10*11/1+.99*100/1 [(8+9+10)/7-(9+10+11)/8+(10+11+12)/9-(11+12+13)/10]/[1/7-1/8 将1/5+1/6++1/8+1/9+1/10+1/11+1/12+1/13+1/14+1/15+1/16+1/17的计算 1/8*9+1/9*10+1/10*11+.1/99*100 1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9+1/10+1/11+1/12的整数部分是几,为啥 (1+1/6)×(1+1/7)+(1+1/8)+(1+1/9)+(1+1/10) (9+10+11/8-10+11+12/9+11+12+13/10-12+13+14/11)/(1/8-1/9+1/10 1/2,1/2,5/8,7/9,11/10 ,( )