If 9 is a factor of 2x, then which of the following may not be an integer? Choose the correct choice from the following answers: A) 6x/54 + 2x/3 B) (4x-18)/9 C) (2x+27)/9 D) (81-4x^2)/81 E) (2x-3)/3
The questions provides that 2x is divisible by 9, so x is either a multiple of 9 or x = 9/2= 
<gadget id="calculator">9/2</gadget>
<output>9/2 = around 4.5</output>
4.5   If x= 4.5 then 6x/54 = (6*4.5)/ (6*9) = 1/2. Not an integer.   The answer is 6x/54 + 2x/3.
<result>A</result>
If 9 is a factor of 2x, then which of the following may not be an integer?