if those are fractions being five and two thirds etc... I believe it would be 17/6. if you convert to improper fractions and then get a common denominator to subtract that should do it. Hope that helps.
Your answer will be letter b
<span>8 less than the the product of 12 and a number x
12 · x - 8 = 12x - 8
</span>
⅔^2+4+6. or ⅔^12
s^(6+1+4)
f question should be f^21 * f^18. and. f^39