有理数:25/|[7/2-(-9/4)-1/3-1/4-(+1/6)]*(-5)=

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有理数:25/|[7/2-(-9/4)-1/3-1/4-(+1/6)]*(-5)=有理数:25/|[7/2-(-9/4)-1/3-1/4-(+1/6)]*(-5)=有理数:25/|[7/2-(-9/4

有理数:25/|[7/2-(-9/4)-1/3-1/4-(+1/6)]*(-5)=
有理数:25/|[7/2-(-9/4)-1/3-1/4-(+1/6)]*(-5)=

有理数:25/|[7/2-(-9/4)-1/3-1/4-(+1/6)]*(-5)=
25/|[7/2-(-9/4)-1/3-1/4-(+1/6)]*(-5)
=25/(7/2+9/4-1/3-1/4-1/6)*(-5)
=25/[7/2-(1/3+1/6)+(9/4-1/4)]*(-5)
=25/(7/2-1/2+2)*(-5)
=25/5*(-5)
=25/(-25)
=-1