问题 解答题
(1)
29
43
+(
22
43
-
8
43
)

(2)
2
3
×
7
12
÷
7
8
答案

(1)

29
43
+(
22
43
-
8
43
),

=

29
43
+
14
43

=1;

(2)

2
3
×
7
12
÷
7
8

=

2
3
×
7
12
×
8
7

=

7
18
×
8
7

=

4
9

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问答题 简答题