First of all, you will want to change the fraction to have the same denominator.
The common factor for 9 and 6 is 18. (9x2=18 and 6x3=18)
Then, you multiply the numerator by the factor you got in the first step, which is 2 and 3, respectively.
So the new fractions are [tex] \frac{4}{18} [/tex] and 7 [tex] \frac{3}{18} [/tex]
The next step is to simply subtract the mixed numbers!
[tex]8 \frac{4}{18} [/tex] - [tex] \frac{3}{18} [/tex] = 1 1/18
The answer would be D: 1 1/18!
