题目内容：

Two numbers are in the tatio 2:3.When 4 is added to each number the ratio changes to 5:7.
The sum of the two original numbers is

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Two numbers are in the tatio 2:3.When 4 is added to each number the ratio changes to 5:7.The sum of the two original numbers is【两数之比为2：3,当每个数加上4时,新的两数之比为5：7,求原来两数之和】假设...