如题所述
47x98-46Ã99
解ï¼ç®ä¾¿è®¡ç®
=(46+1ï¼x98-46x99
=46x98+98x1-46x99
=98+46x(98-99)
=98-46
=52
ç¥å¤©å¤©åä¸ã
解ï¼ç®ä¾¿è®¡ç®
=(46+1ï¼x98-46x99
=46x98+98x1-46x99
=98+46x(98-99)
=98-46
=52
ç¥å¤©å¤©åä¸ã
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第1个回答 2015-05-27
47x98-46×99=47x99-47-46x99=(47-46)x99-47=99-47=52
