I needed help but then i found the answer

Farnesene is a sesquiterpene. how many different isomers arising from double-bond isomerizations are possible? g

With these: 18/36 = 1/? missing number change 1 5/8 to improper fraction. change 19/5 to a mixed number.

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap