问题 解答题
3
4
17
+6
13
17
×0.25+0.625×6
13
17
+6
13
17
×0.125.
答案

3

4
17
+6
13
17
×0.25+0.625×6
13
17
+6
13
17
×0.125,

=3

4
17
+6
13
17
×(0.25+0.625+0.125),

=3

4
17
+6
13
17
×1,

=3

4
17
+6
13
17

=10.

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