问题 解答题
7
97
÷1
3
5
+
5
97
×0.125.
答案

7
97
÷1
3
5
+
5
97
×0.125,

=

7
97
×
5
8
+
5
97
×
1
8

=

5
97
×
7
8
+
5
97
×
1
8

=

5
97
×(
7
8
+
1
8
),

=

5
97
×1,

=

5
97

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