如题所述
第1个回答 2019-12-27
1+1/2-5/6+7/12-9/20+11/30=1+1/2-(1/2+1/3)+1/3+1/4-(1/4+1/5)+1/5+1/6=1+1/2-1/2-1/3+1/3+1/4-1/4-1/5+1/5+1/6=1+1/6=1.16667
第2个回答 2019-12-27
解: 1+1/2-5/6+7/12-9/20+11/30
=60/60+30/60-50/60+35/60
-27/60+22/60
=(60+30+35+22)/60-(50+27)/60
=(147-77)/60
=70/60
=7/6
=1又1/6本回答被网友采纳
=60/60+30/60-50/60+35/60
-27/60+22/60
=(60+30+35+22)/60-(50+27)/60
=(147-77)/60
=70/60
=7/6
=1又1/6本回答被网友采纳