5 1/3 + (2 1/3 + 1 1/3) =

Okay so you want to do the parentheses first okay? So 2.3333 ... + 1.3333333 is?3.666 or 3 2/3. So you got that right? So then 5 1/3 + 3 2/3. You get an easy 9. Because 1/3 + 2/3 adds up to 3/3, and is normally written as 1. So add a one to 5+3=8+1.

Use order of operations, by starting with the parenthesis first. 2 1/3 + 1 1/3 = 3 2/3. Then you would have to finish the rest of the problem by adding 5 1/3 to 3 2/3. Answer: 9