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

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2-5/11÷9/22-5/93/7÷(2/3-1/2)2/15*5+4/7÷428*(5/18÷36/27)2-5/11÷9/22-5/93/7÷(2/3-1/2)2/15*5+4/7÷428*(5

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

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