(-512+23-56+38)×(24×59-24×29+24×23)．

题型：解答题难度：一般来源：不详

(-

5

12

+

2

3

-

5

6

+

3

8

)×(24×

5

9

-24×

2

9

+24×

2

3

)．

答案

(-

5

12

+

2

3

-

5

6

+

3

8

)×(24×

5

9

-24×

2

9

+24×

2

3

)
=(-

5

12

+

2

3

-

5

6

+

3

8

)×[24×(

5

9

-

2

9

+

2

3

)]
=(-

5

12

+

2

3

-

5

6

+

3

8

)×24×1
=-

5

12

×24+

2

3

×24-

5

6

×24+

3

8

×24
=-10+16-20+9
=-5