问题 解答题
化简下列分数:
(1)-
21
7
;                 
(2)-
3
36
;                   
(3)
-54
-8

(4)
7
-
1
3
;                  
(5)
-
1
4
5
;                   
(6)
-6
-0.3
答案

(1)-

21
7
=-3.

(2)-

3
36
=-
1
12

(3)

-54
-8
=
27
4

(4)

7
-
1
3
=-21.

(5)

-
1
4
5
=-
1
20

(6)

-6
-0.3
=20.

判断题
填空题