怎样简便就怎样算.急,十万火急5/6-(5/6-2/7)13/15*4/11+2/15÷11/43/14*2+1/12÷1/6

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怎样简便就怎样算.急,十万火急5/6-(5/6-2/7)13/15*4/11+2/15÷11/43/14*2+1/12÷1/6

怎样简便就怎样算.急,十万火急5/6-(5/6-2/7)13/15*4/11+2/15÷11/43/14*2+1/12÷1/6
怎样简便就怎样算.急,十万火急
5/6-(5/6-2/7)
13/15*4/11+2/15÷11/4
3/14*2+1/12÷1/6

怎样简便就怎样算.急,十万火急5/6-(5/6-2/7)13/15*4/11+2/15÷11/43/14*2+1/12÷1/6
1.=5/6-5/6+2/7
=2/7
2.=13/15*4/11+2/15*4/11
=(13/15+2/15)*4/11
=1*4/11
=4/11
3.=3/7+1/2
=6/14+7/14
=13/14

5/6-(5/6-2/7)
=5/6-5/6+2/7
=0+2/7
=2/7
13/15*4/11+2/15÷11/4
=13/15*4/11+2/15*4/11
=(13/15+2/15)*4/11
=1*4/11
=4/11
3/14*2+1/12÷1/6
=3/14*2+1/12*6
=3/7+1/2
=13/14