Solve the Fraction Equation: 3/5 - ? = 2/5

To solve this problem, we will subtract the given result fraction from the initial fraction to find the missing fraction.

Step 1: Identify the given fractions.
We are given $\frac{3}{5}$ and need to identify the fraction that, when subtracted, results in $\frac{2}{5}$.

Step 2: Perform the subtraction on the numerators.
The equation we form is:

$\frac{3}{5} - \text{missing fraction} = \frac{2}{5}$

We rearrange this to solve for the missing fraction:
$\text{missing fraction} = \frac{3}{5} - \frac{2}{5}$

Step 3: Calculate the difference of the numerators since the denominators are the same:
$\frac{3 - 2}{5} = \frac{1}{5}$

Thus, the missing fraction is $\frac{1}{5}$.

Therefore, the solution to the problem is $\frac{1}{5}$.