题目内容
| 1 |
| 2 |
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| 6 |
(
| 1 |
| 6 |
| 1 |
| 4 |
(1)
+
+
=
+
+
,
=1;
(2)(
-
)×12
=12×
-12×
,
=2-3,
=-1.
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| 2 |
| 1 |
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| 1 |
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=
| 3 |
| 6 |
| 2 |
| 6 |
| 1 |
| 6 |
=1;
(2)(
| 1 |
| 6 |
| 1 |
| 4 |
=12×
| 1 |
| 6 |
| 1 |
| 4 |
=2-3,
=-1.
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