求5道分数混合运算,

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1.(1-5/6×3/5)÷4 =(1-1/2)÷4 =1/2÷4 =1/82.(2/3+4/5)÷1/15 =2/3÷1/15+4/5÷1/15 =10+12 =22 3. 5/6×3/5+4/7+3/7 =(5/6×3/5)+(4/7+3/7) =1/2+1 =3/24. (3/4-1/8)÷2 =5/8÷2 =5/165. 128×(5/8-3/8) =1...