问题 解答题
(6
2
7
+3
5
13
)÷(
2
7
×2+
4
13
)
答案

(6

2
7
+3
5
13
)÷(
2
7
×2+
4
13
),

=(6

2
7
+3
5
13
)÷(
4
7
+
4
13
),

=(

44
7
+
44
13
)÷(
4
7
+
4
13
),

=11×(

4
7
+
4
13
)÷(
4
7
+
4
13
),

=11×[(

4
7
+
4
13
)÷(
4
7
+
4
13
)],

=11×1,

=11.

单项选择题
单项选择题