用简便方法计算10÷[8/3-(5/13÷5/26+2/5)]

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用简便方法计算10÷[8/3-(5/13÷5/26+2/5)]

用简便方法计算10÷[8/3-(5/13÷5/26+2/5)]
用简便方法计算10÷[8/3-(5/13÷5/26+2/5)]

用简便方法计算10÷[8/3-(5/13÷5/26+2/5)]
10÷[8/3-(5/13*26/5+2/5]
=10÷[8/3-(2+2/5)]
=10÷[8/3-12/5]
=10÷(40/15-36/15)
=10÷4/15
=10*15/4
=75/2