问题描述:
(1/2-3+5/6-7/12)×(-36)
(2又1/3-238/54+91/117)×(-1又2/7)
3.228×(-9)+(-3.772)×9-(-1.5×9)
(1-1/2)(1/3-1)(1-1/4)(1/5-1)…(1/2009-1)(1-1/2010)
(2又1/3-238/54+91/117)×(-1又2/7)
3.228×(-9)+(-3.772)×9-(-1.5×9)
(1-1/2)(1/3-1)(1-1/4)(1/5-1)…(1/2009-1)(1-1/2010)
问题解答:
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