(-2006又三分之二)+(-2007又六分之五)+4014又四分之三+(-1又二分之一)
=-2006又2/3-2007又5/6+4014又3/4-1又1/2
=-2006又4/6-2007又5/6+4014又3/4-1又1/2
=-4013又9/6-1又1/2+4014又3/4
=-4013又3/2-1又1/2+4014又3/4
=-4015+4014又3/4
=-1/4
(-2006又三分之二)+(-2007又六分之五)+4014又四分之三+(-1又二分之一)
=-2006又2/3-2007又5/6+4014又3/4-1又1/2
=-2006又4/6-2007又5/6+4014又3/4-1又1/2
=-4013又9/6-1又1/2+4014又3/4
=-4013又3/2-1又1/2+4014又3/4
=-4015+4014又3/4
=-1/4