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Question
Find the sum of all integral values at which the minimum value of the given expression will exist
Find the sum of all integral values at which the minimum value of the given expression will exist
|2x - 5| + |3x -21| + |x + 4|
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Answer
3 + 4 + 5 + 6 + 7 = 25
Plot values of x on number line, you will get minimum at 2.5 then just trial and error. There are other methods but this felt comparatively easy. Hope it helps :)
