Practice Problem on Kirchoff's Rules with 2 Loops
```          A         2 Ohm        B         0 Ohm        C
*--------/\/\/\--------*--------/\/\/\--------*
|                      |                      |
|                      |                      |
|                      |                      |
---  6 Volt            ---  5 Volt            ---  7 Volt
-                      -                      -
|                      |                      |
|                      |                      |
/                      /                      /
\                      \                      \
/  9 Ohm               /  2 Ohm               /  1 Ohm
\                      \                      \
/                      /                      /
\                      \                      \
|                      |                      |
|                      |                      |
|                      |                      |
*--------/\/\/\--------*--------/\/\/\--------*
F         9 Ohm        E         0 Ohm        D
```
What is the voltage difference VA - VB? Give your answer to two decimal places.