问题 解答题
(
8
17
×3.17+3.17×
9
17
)÷3
17
100
答案

8
17
×3.17+3.17×
9
17
)÷3
17
100

=[3.17×(

8
17
+
9
17
)]÷3
17
100

=(3.17×1)÷3

17
100

=3

17
100
÷3
17
100

=1.

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