题目内容
计算:(1)|-6|+(+7)-(+2)-(-1);(2)(-24)×(
-
+
)+(-2)3.
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(1)原式=6+7-2+1
=6+7+1-2
=12;
(2)原式=-24×
+24×
-24×
-8
=-3+8-6-8
=-9
=6+7+1-2
=12;
(2)原式=-24×
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=-3+8-6-8
=-9
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