3/8÷(5/4-6/11-8/1)简便方法?
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(1)[11/8]-( [5/6]+[3/8]),
=[11/8]-[3/8]-[5/6],
=1-[5/6],
=[1/6];
(2)[5/9]+[4/11]+[6/11]+[4/9],
=([5/9]+[4/9])+([4/11]+[6/11]),
=1+[10/11],
=1[10/11];
(3)5-[3/7]-[4/7],
=5-([3/7]+[4/7]),
=5-1,
=4
=[11/8]-[3/8]-[5/6],
=1-[5/6],
=[1/6];
(2)[5/9]+[4/11]+[6/11]+[4/9],
=([5/9]+[4/9])+([4/11]+[6/11]),
=1+[10/11],
=1[10/11];
(3)5-[3/7]-[4/7],
=5-([3/7]+[4/7]),
=5-1,
=4
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3/8÷(5/4-6/11-8/1)
=3/8÷(55/44-24/44-352/44)
=3/8÷321/44
=3/8×44/321
=5.5/107
=3/8÷(55/44-24/44-352/44)
=3/8÷321/44
=3/8×44/321
=5.5/107
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3/8÷(5/4-6/11-8/1)
=3/8÷(55/44-24/44-/44)
=3/8÷(-321/44)
=3/8×(-44/321)
=1/2×(-11/107)
=-11/214
=3/8÷(55/44-24/44-/44)
=3/8÷(-321/44)
=3/8×(-44/321)
=1/2×(-11/107)
=-11/214
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