题目内容
(
-
+
)÷2
×4
.
| 3 |
| 20 |
| 2 |
| 15 |
| 1 |
| 6 |
| 1 |
| 5 |
| 4 |
| 5 |
(
-
+
)÷2
×4
,
=(
-
+
)÷2
×4
,
=
×
×
,
=
.
| 3 |
| 20 |
| 2 |
| 15 |
| 1 |
| 6 |
| 1 |
| 5 |
| 4 |
| 5 |
=(
| 9 |
| 60 |
| 8 |
| 60 |
| 10 |
| 60 |
| 1 |
| 5 |
| 4 |
| 5 |
=
| 11 |
| 60 |
| 5 |
| 11 |
| 24 |
| 5 |
=
| 2 |
| 5 |
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