Number Properties Guide (No.1) Chap 3 No. 5

[afvatcha]

Hi Guys,

I started studying in 08, but fizzled out. I started self-studying again this year.

The question reads: When is |X-4| equal to 4-X.

I think I remember that there is a special way to read this question. I know what it is asking, but how do you go about solving it? I did not understand the explanation in the answer back.

Thanks for any feedback.

[jnelson0612]

Hi afvatcha,
Please check out this link and Ben Ku's explanation: question-from-mgmat-num-prop-strat-guide-q5-page-43-t9940.html

Please let us know if you'd like further explanation. Thanks!