Sorry, that's not correct and is probably symptomatic of deeper problems you have, above and beyond what MHF can help with. A pre-test is meant to identify problems you have so that you can get help from your teacher beforehand.

The common denominator is 2x3 = 6. Now express each fraction over this common denominator:

1/2 = 3/6.

2/3 = 4/6.

So you need to find 3/6 + 4/6.

But MHF cannot provide the general remedial help you need. You must go to your teacher for help.