如题所述
第1个回答 2016-07-05
672-113-87=672-(113+87)=672-200=472
第2个回答 2016-07-05
672-113-87
=672-(113+87)
=672-200
=572追答
=672-(113+87)
=672-200
=572追答
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672-113-87
=672-(113+87)
=672-200
=472
第3个回答 2016-07-05
=672-(113+87)
=672-200
=472
=672-200
=472
第4个回答 2016-07-05
672-113-87
=672-(100+13)-(100-13)
=672-100-100-13+13
=472
=672-(100+13)-(100-13)
=672-100-100-13+13
=472
第5个回答 2016-07-05
672-113-87
=672-(113+87)
=672-200
=472
=672-(113+87)
=672-200
=472