如果m=1.4,n=2.7,求下列各式的值. 5m+3n 7n-4m 2m-n除以3
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如果m=1.4,n=2.7,求下列各式的值. 5m+3n 7n-4m 2m-n除以3
![如果m=1.4,n=2.7,求下列各式的值. 5m+3n 7n-4m 2m-n除以3](/uploads/image/z/17601182-62-2.jpg?t=%E5%A6%82%E6%9E%9Cm%3D1.4%2Cn%3D2.7%2C%E6%B1%82%E4%B8%8B%E5%88%97%E5%90%84%E5%BC%8F%E7%9A%84%E5%80%BC.+5m%2B3n+7n-4m+2m-n%E9%99%A4%E4%BB%A53)
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