计算：(-112)+(+114)+(-212)-(-314)-(+114)

题型：解答题难度：一般来源：不详

计算：(-1

1

2

)+(+1

1

4

)+(-2

1

2

)-(-3

1

4

)-(+1

1

4

)

答案

原式=-1

1

2

+1

1

4

-2

1

2

+3

1

4

-1

1

4

=-1

1

2

-2

1

2

+1

1

4

-1

1

4

+3

1

4

=-4+3

1

4

=-

3

4