maths f4

2011-03-17 6:39 am
1) the sum of two positive numbers is 14. if the double of the sum of reciprocals of these two numbers is 7/2 , find the two numbers.

2) if the digits of two-digit number are reversed ,then its value will be increased by 36 .the sum of the squares of two digits is 58.find the original number
更新1:

the two numbers is 7/12

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收錄日期: 2021-04-22 00:55:35
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