2-5/11÷9/22-5/9 3/7÷(2/3-1/2) 2/15*5+4/7÷4 28*(5/18÷36/27)

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/27 13:42:45

2-5/11÷9/22-5/9 3/7÷(2/3-1/2) 2/15*5+4/7÷4 28*(5/18÷36/27)

(1)2-5/11÷9/22-5/9 (2)3/7÷(2/3-1/2) (3)2/15*5+4/7÷4 (4)=28*5/24
=2-10/9-5/9 =3/7÷1/6 =2/3+1/7 =35/6
=1/3 =18/7 =17/21