so if |x|=(x,if x>=0, and -x, if x<0)(adsbygoogle = window.adsbygoogle || []).push({});

then what would be like |x-7| be equal too and how do you do this i do not understand why |x|equals (x,if x>=0, and -x, if x<0) could you explain it to me?

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# Homework Help: Absolute values of variables

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