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1、2700/(1980-72×15) = = = 2、1375-450/18×25 =
1、2700/(1980-72×15)
=
=
=
2、1375-450/18×25
=
=
=
3、1004-(520+649/160)
=
=
=
人气：224 ℃　时间：2020-05-10 01:41:43
解答
1.=2700/(1980-1080)
=2700/900
=3
2.=1375-25*25
=1375-625
=750
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