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计算:(1)?34+(?12)+56+(?43)(2)(?2)2?|?6|+2?3×(?13)
计算:(1)?34+(?12)+56+(?43)(2)(?2)2?|?6|+2?3×(?13)....
计算:(1)?34+(?12)+56+(?43)(2)(?2)2?|?6|+2?3×(?13).
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解答:(1)解:原式=?
?
+
?
=-
-
=?
;
(2)解:原式=4-6+2+1
=-2+3
=1.
3 |
4 |
1 |
2 |
5 |
6 |
4 |
3 |
=-
5 |
4 |
1 |
2 |
=?
7 |
4 |
(2)解:原式=4-6+2+1
=-2+3
=1.
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