Question 448132
Let x = number of words on the list (this is unknown for now)



Since you "have memorized 12 words on the list" and "that is 2/3's the list", this means that {{{(2/3)x=12}}}. Ie take 2 thirds of x to get 12.




Now multiply both sides by 3 to get {{{2x=36}}} (12*3=36)



Now divide both sides by 2 to get {{{x=18}}} (36/2 = 18)



So there are 18 words on the list. 



So two-thirds of 18 is 12.