解(1)
原式=26/5+3/4+5/6+7/12
=26/5+9/12+10/12+7/12
=26/5+13/6
=156/30+65/30
=221/30
解(2)
原式=3又8/11-10/27-9/11+9/5
=41/11-10/27-9/11+9/5
=(41/11-9/11)+9/5-10/27
=32/11+9/5-10/27
=4320/1485+2673/1485-550/1485
=4又503/1485
解(1)
原式=26/5+3/4+5/6+7/12
=26/5+9/12+10/12+7/12
=26/5+13/6
=156/30+65/30
=221/30
解(2)
原式=3又8/11-10/27-9/11+9/5
=41/11-10/27-9/11+9/5
=(41/11-9/11)+9/5-10/27
=32/11+9/5-10/27
=4320/1485+2673/1485-550/1485
=4又503/1485