如题所述
127x83一83
=83x(127-1)
=83x126
=(80 + 3)x(125+1)
=80x125+80+3x125+3
=10000+80+375+3
=10458
=83x(127-1)
=83x126
=(80 + 3)x(125+1)
=80x125+80+3x125+3
=10000+80+375+3
=10458
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第1个回答 推荐于2016-08-10
127x83一83
=83x(127-1)
=83x126
=(80 + 3)x(125+1)
=80x125+80+3x125+3
=10000+80+375+3
=10458
=83x(127-1)
=83x126
=(80 + 3)x(125+1)
=80x125+80+3x125+3
=10000+80+375+3
=10458
第2个回答 2015-12-06
127X83-83=127X83-1X83=(127-1)X83=126x83= 10458
第3个回答 2015-06-01
(80+3)(120+6)