（1）(1-

1

6

+

3

4

)×(-48)

=-48+

1

6

×48-

3

4

×48

=-48+8-36

=-76；

（2）-14-(1-0.5)×

1

3

×[2-(-3)2]

=-1-

1

2

×

1

3

×[2-9]

=-1+

1

2

×

1

3

×7

=-1+

7

6

=

1

6

．