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计算:--九年级数学
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题目简介
计算:(1)(2)-七年级数学
题目详情
(1)
(2)
答案
(1)-8
(2)-20
="2-10 " (2分)
="-8 " (3分)
(2)
=-
="-32+12 " (2分)
="-20 " (3分)