如题所述
127×75＋26×127－127
=127×75＋26×127－127×1
=127×(75＋26－1)
=127×100
=12700
=127×75＋26×127－127×1
=127×(75＋26－1)
=127×100
=12700
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第1个回答 2020-09-19
=（127+45）*75+26*127-127
=127*75+45*75+26*127-127
=127*（75+26-1）+45*75
=127*100+45*（70+5）
=12700+45*70+45*5
=12700+3150+225
=16075
=127*75+45*75+26*127-127
=127*（75+26-1）+45*75
=127*100+45*（70+5）
=12700+45*70+45*5
=12700+3150+225
=16075
