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To solve the equation \( \frac{2f}{5} - \frac{8}{5} + 2f = 8 \), we can follow these steps:
1. **Clear the fractions** by multiplying every term by 5:
\[
5 \left( \frac{2f}{5} \right) - 5 \left( \frac{8}{5} \right) + 5 (2f) = 5(8)
\]
This simplifies to:
\[
2f - 8 + 10f = 40
\]
2. **Combine like terms** on the left side:
\[
(2f + 10f) - 8 = 40
\]
\[
12f - 8 = 40
\]
3. **Isolate the term with \( f \)** by adding 8 to both sides:
\[
12f - 8 + 8 = 40 + 8
\]
\[
12f = 48
\]
4. **Solve for \( f \)** by dividing both sides by 12:
\[
f = \frac{48}{12}
\]
\[
f = 4
\]
Thus, the solution to the equation is \( \boxed{4} \).