i want the answer

You want the answer? How blunt... this is what l mean by my quote in simplified terms. But for the points l will do so.

|2-7|

You will get the absolute value of -5 or |-5|

Since absolute value makes anything inside that has been SlMPLlFlED TO A SlNGLE VALUE positive then your answer will be... 5.

Pay attention more in class, it helps. c:

Things like this only take 20 seconds to learn, you got 20 seconds !!!!