You need to find a whole number that will divide evenly into both the top and bottom of the fraction. Ratios can be represented as a/b. Where b is not equal to 0.
After playing around with the numbers I got 2.
[tex] \frac{18}{52} / \frac{2}{2} = \frac{9}{26} [/tex]
So, 9/26 is the answer.
