计算:2.75-[-1/2+5/6-(8/3-14/3)]

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计算:2.75-[-1/2+5/6-(8/3-14/3)]

 
 
2.75-[-1/2+5/6-(8/3-14/3)]
=2.75-0.5+5/6-2
=1/4+5/6
=13/12
 
谢谢 
 
 

=2.75-1/6[-3+5-(16-28)]
=2.75-1/6*14
=11/4-7/3
=1/12*(33-28)
=5/12