题目内容
39
×0.7+65
×4.18.
| 3 |
| 23 |
| 5 |
| 23 |
39
×0.7+65
×4.18,
=
×0.7+
×4.18,
+
,
=
,
=300.
| 3 |
| 23 |
| 5 |
| 23 |
=
| 900 |
| 23 |
| 1500 |
| 23 |
| 630 |
| 23 |
| 6270 |
| 23 |
=
| 6900 |
| 23 |
=300.
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题目内容
| 3 |
| 23 |
| 5 |
| 23 |
| 3 |
| 23 |
| 5 |
| 23 |
| 900 |
| 23 |
| 1500 |
| 23 |
| 630 |
| 23 |
| 6270 |
| 23 |
| 6900 |
| 23 |