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OpenStudy (anonymous):
The value of a two digit number is twice as large as the sum of its digits. If the digits were reversed, the resulting number would be 9 less than 5 times he original number. What is the original number?
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OpenStudy (anonymous):
10.a+b=N a+b=N/2 10.b+a=5N-9 solve it
OpenStudy (ikram002p):
a+10b= 2 (a+b) 10a+b=5(10b+a)-9
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