如题所述
98x12x5+2x12x555x4
=98x12x5+2x12x5×111x4
=98x12x5+12x5x888
=(98+888)x12x5
=986×60
=59160
=98x12x5+2x12x5×111x4
=98x12x5+12x5x888
=(98+888)x12x5
=986×60
=59160
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第1个回答 2015-05-08