Can u take a picture please?
9 has factors of 3*3.
2 is prime, so no factors.
from those two denominators, we can get the LCD of hmmm simply their product, namely 18.
now, recall that, to get the mixed fraction, we divide 89 ÷ 18, the quotient goes up front, the "4", and the remainder is the one atop, the "17".
2 2/3 ÷ 5/6 = 3.2 is the answer
D. to clearly state why the experiment was performed