(+5又3/8)-(+7又3/4)=?(-4又1/3)-(-4又2/5)=?
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![(+5又3/8)-(+7又3/4)=?(-4又1/3)-(-4又2/5)=?](/uploads/image/z/14726037-21-7.jpg?t=%EF%BC%88%2B5%E5%8F%883%2F8%EF%BC%89-%EF%BC%88%2B7%E5%8F%883%2F4%EF%BC%89%3D%3F%EF%BC%88-4%E5%8F%881%2F3%EF%BC%89-%EF%BC%88-4%E5%8F%882%2F5%EF%BC%89%3D%3F)
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(+5又3/8)-(+7又3/4)=?(-4又1/3)-(-4又2/5)=?
(+5又3/8)-(+7又3/4)=?(-4又1/3)-(-4又2/5)=?
(+5又3/8)-(+7又3/4)=?(-4又1/3)-(-4又2/5)=?
(+5又3/8)-(+7又3/4)
=5又3/8-7又3/4
=-3又5/8
(-4又1/3)-(-4又2/5)
=-4又1/3+4又2/5
=1/15
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