Accoring to the order of operations, you should multiply first. Thus, we must compute 3/3*3, which is equivalent to 3/9, or 1/3. The resulting expression is 3+3-1/3. Addition and subtraction can be done in any order, but for the sake of convenience we could add 3+3 first, giving us a result of 6. (You could alternatively subract 1/3 from 3, and then add 3 to the result.) Then, subtract 1/3 from 6, or 18/3, to arrive at the final answer of 17/3. Thus, the final answer is 17/3, or 5 2/3. QED
