如题所述
åç®ä¾¿æ¹æ³è®¡ç®199x22çäºä»ä¹
=ï¼200-1ï¼x22
=200x22-22
=4400-22
=4378
=ï¼200-1ï¼x22
=200x22-22
=4400-22
=4378
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第1个回答 2016-04-23
199x22
=（200-1）x22
=200x22-22
=4400-22
=4378
=（200-1）x22
=200x22-22
=4400-22
=4378
