题目内容
3
×2
+2
×
.
3 |
4 |
2 |
5 |
2 |
5 |
1 |
4 |
3
×2
+2
×
=(3
+
)×2
,
=4×2
,
=4×
,
=9
.
3 |
4 |
2 |
5 |
2 |
5 |
1 |
4 |
=(3
3 |
4 |
1 |
4 |
2 |
5 |
=4×2
2 |
5 |
=4×
12 |
5 |
=9
3 |
5 |
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题目内容
3 |
4 |
2 |
5 |
2 |
5 |
1 |
4 |
3 |
4 |
2 |
5 |
2 |
5 |
1 |
4 |
3 |
4 |
1 |
4 |
2 |
5 |
2 |
5 |
12 |
5 |
3 |
5 |