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230问答网 > 十三分之十二乘七分之三加七分之四乘十三分之十二减去十三分之十二等于多少？

十三分之十二乘七分之三加七分之四乘十三分之十二减去十三分之十二等于多少？

简便运算，要过程

2025-04-07 03:15:43

推荐回答（2个）

回答1：

(12/13)*(3/7)+(4/7)*(12/13)-(12/13)
=(12/13)*（3/7+4/7)-(12/13)
=(12/13)-(12/13)
=0

回答2：

12/13 x 3/7 + 4/7 x 12/13 - 12/13
=12/13 x（3/7+4/7) - 12/13
=12/13 -(12/13)
=0

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