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计算:(1)?523?823÷(?2)×213+23(2)?14?16×[?2+(?3)2]
计算:(1)?523?823÷(?2)×213+23(2)?14?16×[?2+(?3)2]....
计算:(1)?523?823÷(?2)×213+23(2)?14?16×[?2+(?3)2].
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(1)?5
?8
÷(?2)×
+
=-5
+
×
×
+
=-5
+
+
=-4
;
(2)?14?
×[?2+(?3)2]
=-1-
×[-2+9]
=-1-
×7
=-1-1
=-2
.
2 |
3 |
2 |
3 |
2 |
13 |
2 |
3 |
=-5
2 |
3 |
26 |
3 |
1 |
2 |
2 |
13 |
2 |
3 |
=-5
2 |
3 |
2 |
3 |
2 |
3 |
=-4
1 |
3 |
(2)?14?
1 |
6 |
=-1-
1 |
6 |
=-1-
1 |
6 |
=-1-1
1 |
6 |
=-2
1 |
6 |
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