题目内容
(
-
)÷(
+4
)÷
.
| 7 |
| 10 |
| 2 |
| 5 |
| 4 |
| 15 |
| 9 |
| 10 |
| 8 |
| 25 |
(
-
)÷(
+4
)÷
,
=
÷
÷
,
=
×
×
,
=
.
| 7 |
| 10 |
| 2 |
| 5 |
| 4 |
| 15 |
| 9 |
| 10 |
| 8 |
| 25 |
=
| 3 |
| 10 |
| 31 |
| 6 |
| 8 |
| 25 |
=
| 3 |
| 10 |
| 31 |
| 6 |
| 25 |
| 8 |
=
| 45 |
| 248 |
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