来自毕盛的问题
计算2/5+3/4+2/3=2/3-(1/4+1/5)=25/28-(3/7+5/14)=
计算2/5+3/4+2/3=2/3-(1/4+1/5)=25/28-(3/7+5/14)=
1回答
2020-04-26 14:28
计算2/5+3/4+2/3=2/3-(1/4+1/5)=25/28-(3/7+5/14)=
计算2/5+3/4+2/3=2/3-(1/4+1/5)=25/28-(3/7+5/14)=
2/5+3/4+2/3=24/60+45/60+40/60=89/60=1又29/60
2/3-(1/4+1/5)=40/60-15/60-12/60=13/60
25/28-(3/7+5/14)=25/28-12/28-10/28=3/28