题目内容
计算:
÷|
-
|-
×(-2)2.
| 7 |
| 9 |
| 1 |
| 5 |
| 2 |
| 3 |
| 1 |
| 3 |
原式=
÷|-
|-
×4
=
×
-
=
-
=
.
| 7 |
| 9 |
| 7 |
| 15 |
| 1 |
| 3 |
=
| 7 |
| 9 |
| 15 |
| 7 |
| 4 |
| 3 |
=
| 5 |
| 3 |
| 4 |
| 3 |
=
| 1 |
| 3 |
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题目内容
| 7 |
| 9 |
| 1 |
| 5 |
| 2 |
| 3 |
| 1 |
| 3 |
| 7 |
| 9 |
| 7 |
| 15 |
| 1 |
| 3 |
| 7 |
| 9 |
| 15 |
| 7 |
| 4 |
| 3 |
| 5 |
| 3 |
| 4 |
| 3 |
| 1 |
| 3 |