Question

直接写出得数． 1- 3 8 = 4 5 + 7 10 = 4-( 1 6 + 5 6 ) = 7 9 + 5 12 =

Answer 1

1-

3

8 =

5

8 ，

4

5 +

7

10 =

3

2 ， 4-(

1

6 +

5

6 ) =3，

7

9 +

5

12 =

43

36 ，

7

15 +

1

15 =

8

15 ，

5

6 -

1

3 =

1

2 ， 2-

1

3 -

2

3 =1，

1

5 -

1

6 =

1

30 ．