计算题,(+25/7)+(-2/3)+(-25/7)+(-1/3)
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计算题,(+25/7)+(-2/3)+(-25/7)+(-1/3)
计算题,(+25/7)+(-2/3)+(-25/7)+(-1/3)
计算题,(+25/7)+(-2/3)+(-25/7)+(-1/3)
(+25/7)+(-2/3)+(-25/7)+(-1/3)
=(+25/7)-25/7-(2/3+1/3)
=0-1
=-1
(+25/7)+(-2/3)+(-25/7)+(-1/3)
=25/7-25/7-2/3-1/3
=-1