The value of $x$ satisfying the equation $15 | x - 7 | + 4 = 10 | x - 7 | + 4$ is

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Solution

$15 | x - 7 | + 4 = 10 | x - 7 | + 4 \Rightarrow 5 | x - 7 | = 0 \Rightarrow x = 7$

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