1 2/5 - (-3/5)
First, we're going to convert 1 2/5 into an improper fraction. 
1 2/5 = 7/5
7/5 - (-3/5)
Subtracting a negative is the same as adding, so the problem will look like:
7/5 + 3/5
The denominators are the same, so we just add the numerators. 
The answer is 10/5, or 2.