题目内容
(
-
+
)÷(-
).
1 |
6 |
2 |
7 |
2 |
3 |
5 |
42 |
原式=
×(-
)-
×(-
)+
×(-
)
=-
+
-
=-
.
1 |
6 |
42 |
5 |
2 |
7 |
42 |
5 |
2 |
3 |
42 |
5 |
=-
7 |
5 |
12 |
5 |
28 |
5 |
=-
23 |
5 |
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题目内容
1 |
6 |
2 |
7 |
2 |
3 |
5 |
42 |
1 |
6 |
42 |
5 |
2 |
7 |
42 |
5 |
2 |
3 |
42 |
5 |
7 |
5 |
12 |
5 |
28 |
5 |
23 |
5 |