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Re: Is the tens digit of a three-digit positive integer p

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cumulonimbus wrote:
Here, P=3x+7 as well as P=3y+13, where x an y are integers.
These can be combined as:
P=LCM(of coefficients of integers)*Integer + first common term of these two equations.

P=3x+7 => 7,10,13,16,19..
P=3y+13 =>13,16,19,22..
so these two equations can be combined as:

P=3q+100 => 19,22, 25, ...100,103...112.....130,133


I can't see how your final equation P = 3q + 100 follows the structure "LCM*Integer + first common term"

Do you mean first positive common term? In this case, wouldn't the value be 13, with x = 2 and y = 0? Where do you get the 100?

Thanks for any clarification.

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