Answer: 
<u>Step-by-step explanation:</u>

The total of the sweater is $27.
Divide 18/1 by 2/3. You would get 27. Which means 1/3 of the sweater is $9.
And 2/3 would be $18.
Not Specific Enough:
is it 4a(2-3a)-41(7a-72)-23a(64)6a-2?
Answer:
you should count how many time two or more line touches each other