List 2/3 , 7/12 , and 3/4 from greatest to least .

For this question you should know that:
2/3 = 8/12 
and 
3/4 = 9/12 
so now you can say:
7/12 < 8/12 < 9/12 
so: 
7/12 < 2/3 < 3/4 :)))
i hope this is helpful
have a nice day 

Forget the numerators, focus on the denominators for now. 3 an 4 are both multiples of 12, so we can multiply  by 4 and  by 3 to make all the fractions out of 12. This should make it easier to understand which one is the smallest / biggest. 

 × 4 =  

 × 3 =  

You leave  as it is because it's already out of 12.

Now you can see that obviously,  is the largest fraction, as 9 is the biggest when it's out of 12.  is the second largest as it's 8 out of 12, which is smaller than 9 but bigger than 7. Obviously, the last is one is .

So the order is:

, , .

We need more info then that