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Let f(x)=||x|−6|+|15−|x|| . Then f(6)+f(15) is equal to:

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Answer to a math question Let f(x)=||x|−6|+|15−|x|| . Then f(6)+f(15) is equal to:

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f(6) = 0 + |15 - 6| = 9 f(15) = |15 - 6| + 0 = 9 f(6) + f(15) = 18

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