Final answer:
To rewrite a fraction with a common denominator, find the least common multiple (LCM) of the denominators and multiply the numerator and denominator by the necessary factors to obtain the common denominator.
Step-by-step explanation:
To rewrite fractions with a common denominator, we need to find the least common multiple (LCM) of the denominators. In this case, the denominators are X and 8.
To find the LCM, we can list the multiples of each number and find the smallest number that appears in both lists.
For X, the multiples are X, 2X, 3X, ... and for 8, the multiples are 8, 16, 24, ...
The smallest number that appears in both lists is 8X. So, to rewrite the fraction 2/X with a denominator of 8, we multiply both the numerator and denominator by 8 to get (2*8)/(X*8) = 16/8.