Answer:
11/15
Step-by-step explanation:
First, you must make the two denominators the same by finding the GCF (greatest common factor).
The greatest common factor of 5 and 3 is 15.
First, deal with 2/5.
Since 5x3=15, you must multiply 3 by 2 as well.
So, you end up with 6/15.
Next, deal with 1/3.
Since 3x5=15, you must multiply 1 by five as well.
So you end up with 5/15.
Now you are able to add the two numbers. Remember that you only have to subtract the numerators, and not the denominators.
5/15 + 6/15 = 11/15.
So the answer is 11/15. You cannot simplify.