简便计算4/15+7/30+11/151-7/14-3/143/5-7/11+2/5-4/119/10-（7/9-1/4)5/6+3/4-4/515/16+7/5-14/15

Answer 1

4/15+7/30+11/15=4/15+11/15+7/30=1+7/30 1-7/14-3/14 =1-7/14 3/5-7/11+2/5-4/11 =3/5+2/5-7/11-4/11=1-1=09/10-（7/9-1/4)——没想到方法5/6+3/4-4/5 =5/6-4/5 +3/4——是不是有方法?15/16+7/5-14/15=7/5-14/15+15...