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Median is the middle number in a sorted list of numbers. 

Hence if the median is 2 and to the maximum of x in value, below is how you should see

0 1 2 2 3
2x+1 7 4 1 3x+2

∴ 2x +1 + 7 + 4 = 3x + 2

               3x – 2x = 1+7+4-2

                          x = 10

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Thank bbcxd, but how do we know we must separate 4 and 1 out from 5?

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Because the medium is 2 and to the maximum of x, it can only be the last 2 just before 3. Hence, we separate the 5 of 2 into 4 and 1. Hope this make sense.

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