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5/6-(2/3-1/9)等于多少(第等式)

题目详情
5/6-(2/3-1/9)等于多少(第等式)
▼优质解答
答案和解析
5/6-(2/3-1/9)
=5/6-(4/9-1/9)
=5/6-3/9
=5/6-1/3
=5/6-2/6
=3/6
=1/2
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