
49分之十除以中括号5/12除以括号零点75-1/6括回中括号括回该怎么简算?
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49分之十除以中括号5/12除以括号零点75-1/6括回中括号括回
=10/49÷[5/12÷(0.75-1/6)]
=10/49÷[5/12÷(3/4-1/6)]
=10/49÷[5/12÷7/12]
=10/49÷5/7
=2/7
=10/49÷[5/12÷(0.75-1/6)]
=10/49÷[5/12÷(3/4-1/6)]
=10/49÷[5/12÷7/12]
=10/49÷5/7
=2/7
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