If 2|2 –a| = 5, what is the sum of all the possible values for a ? Choose the correct choice from the following answers:  A) 1/2  B) 2  C) 5/2  D) 4  E) 5
if a&lt;2, then 2-a=5/2; a=-1/2   if a&gt;2 , then a-2=5/2; a=9/2   9/2-1/2=8/2= 
<gadget id="calculator">8/2</gadget>
<output>4</output>
4=4
<result>D</result>
If 2|2 –a| = 5, what is the sum of all the possible values for a ?