Sure, here is the translated text:

```
In this exercise, the letters represent digits. Determine each of the addends of the given sum.

$
\begin{array}{r}
a b c d e f \\
a b c d e f \\
+\quad g h i j \\
\hline d e f h j f
\end{array}
$
```
Three solutions:

| 231468 |
| ---: |
| 231468 |
| $+\quad 5972$ |
| 468908 |$\quad$| 264538 |
| ---: |
| 264538 |
| $\quad 9102$ |