If 2/z = 2/(z + 1) + 2/(z + 16) which of these integers could be the value of z? Select the correct option.
A) 0  B) 1  C) 2  D) 3  E) 4
Solving for z algebraically in this problem would not be easy. Instead, we can follow the hint in the question (“which of these integers…”) and test each answer choice:   A. 2/0 = 2/1 +2/16 INCORRECT (Division by zero)   A. 2/1 = 2/2 +2/17 INCORRECT   A. 2/2 = 2/3 +2/18 INCORRECT   A. 2/3 = 2/4 +2/19 INCORRECT   A. 2/4 = 2/5 +2/20 CORRECT   The correct answer is E, because it contains the only value that makes the equation work. Notice how quickly this strategy worked in this case
<result>E</result>
If 2/z = 2/(z + 1) + 2/(z + 16) which of these integers could be the value of z?