5/6+(2/3-1/2)÷2/3怎样做?

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5/6+(2/3-1/2)÷2/3怎样做?
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5/6+(2/3-1/2)÷2/3怎样做?
5/6+(2/3-1/2)÷2/3怎样做?

5/6+(2/3-1/2)÷2/3怎样做?

5/6+(2/3-1/2)÷2/3
=5/6+1/6÷2/3
=5/6+1/6÷2/3
=5/6+1/4
=13/12