如题所述
875-198=875-(200-2)
=875-200+2
=675+2
=677
=875-200+2
=675+2
=677
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第1个回答 2020-03-08
875-198
=875-(200-2)
=875-200+2
=675+2
=677
=875-(200-2)
=875-200+2
=675+2
=677