(1又3/4+7/8-7/12)×(-1又1/7)
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![(1又3/4+7/8-7/12)×(-1又1/7)](/uploads/image/z/1629799-7-9.jpg?t=%EF%BC%881%E5%8F%883%2F4%2B7%2F8-7%2F12%EF%BC%89%C3%97%EF%BC%88%EF%BC%8D1%E5%8F%881%2F7%EF%BC%89)
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(1又3/4+7/8-7/12)×(-1又1/7)
(1又3/4+7/8-7/12)×(-1又1/7)
(1又3/4+7/8-7/12)×(-1又1/7)