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7/3+5/1-4/3+(5/3-5/2)
2个回答
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5/1一般写成5,所以我猜分数写反了:
3/7+1/5-3/4+(3/5-2/5)
=3/7+1/5-3/4+1/5
=3/7+2/5-3/4
=(60+56-105)/140
=11/140
3/7+1/5-3/4+(3/5-2/5)
=3/7+1/5-3/4+1/5
=3/7+2/5-3/4
=(60+56-105)/140
=11/140
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