题目内容
[(
-
)×
+
×
]÷2
.
| 5 |
| 4 |
| 3 |
| 8 |
| 5 |
| 26 |
| 1 |
| 8 |
| 5 |
| 26 |
| 4 |
| 13 |
[(
-
)×
+
×
]÷2
,
=[
×
+
×
]÷2
,
=[
+
]×
÷2
,
=1×
×
,
=
.
| 5 |
| 4 |
| 3 |
| 8 |
| 5 |
| 26 |
| 1 |
| 8 |
| 5 |
| 26 |
| 4 |
| 13 |
=[
| 7 |
| 8 |
| 5 |
| 26 |
| 1 |
| 8 |
| 5 |
| 26 |
| 4 |
| 13 |
=[
| 7 |
| 8 |
| 1 |
| 8 |
| 5 |
| 26 |
| 4 |
| 13 |
=1×
| 5 |
| 26 |
| 13 |
| 30 |
=
| 1 |
| 12 |
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