Order the fractions from least to greatest. 2 2/3,2 6/15,2 3/5,2 4/9

We should bring all of those numbers to the same denominator: here 45 is best, since it's a multiplication of all the denominators present (3,15,5,9). 

So the numbers will be:

, , , 

I calculated this like this: 

(on the example of )



I multiphied by 15 because 45/3=13

so now we can order those numbers from the smallest to the largest:

  ,  , , 

which correspond to 

  ,  , ,