如题所述
提取公因式45
724x45-45x24
=45x(724-24)
=45x700
=31500
724x45-45x24
=45x(724-24)
=45x700
=31500
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第1个回答 2020-04-22
724×45-45×24
=724×45-24×45
=(724-24)×45
=700×45
=31500
=724×45-24×45
=(724-24)×45
=700×45
=31500
第2个回答 2020-04-22
724ⅹ45-45x24
=45x(724-24)
=45x700
=31500
=45x(724-24)
=45x700
=31500