(-1000+3分之2)+(-999+6分之5)+2000+4分之3+(-2分之1)
={(-1000)+2000+(-99)}+{2/3+5/6+3/4+(-1/2)}
=901+[9/4+(-1/2)]
=901+1又4分之3
=902又4分之3
(-1000+3分之2)+(-999+6分之5)+2000+4分之3+(-2分之1)
={(-1000)+2000+(-99)}+{2/3+5/6+3/4+(-1/2)}
=901+[9/4+(-1/2)]
=901+1又4分之3
=902又4分之3