1997x2002000-2000x19971997怎样用简便方法解答
答案:1 悬赏:60 手机版
解决时间 2021-04-07 10:56
- 提问者网友：星軌
- 2021-04-06 22:33
1997x2002000-2000x19971997怎样用简便方法解答
最佳答案
- 五星知识达人网友：詩光轨車
- 2021-04-06 23:51
1997x2002000-2000x19971997怎样用简便方法解答
1997x2002000-2000x19971997
=1997x(2000000+2000)-2000x19971997
=1997x2000000+2000x1997-2000x19971997
=1997x2000000+2000x1997-2000x(19970000+1997)
=1997x2000000+2000x1997-2000x19970000-1997x2000
=1997x2000000-2000x19970000
=1997x2(1000000-10000000)
=3994x(-9000000)
=-35946000000
1997x2002000-2000x19971997
=1997x(2000000+2000)-2000x19971997
=1997x2000000+2000x1997-2000x19971997
=1997x2000000+2000x1997-2000x(19970000+1997)
=1997x2000000+2000x1997-2000x19970000-1997x2000
=1997x2000000-2000x19970000
=1997x2(1000000-10000000)
=3994x(-9000000)
=-35946000000
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