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**1. Homework Statement**

[URL]http://img25.imageshack.us/i/circuitj.jpg[/URL]

(Image won't show up, here's the link http://img25.imageshack.us/i/circuitj.jpg/)

**2. Homework Equations**

Kirchoff's Junction & Potential rules.

**3. The Attempt at a Solution**

[URL]http://img29.imageshack.us/i/circuit2.jpg[/URL]

(Image won't show up, here's the link http://img29.imageshack.us/i/circuit2.jpg/)

Equations I get are:

(Loop1) [tex]-7I_2+4I_3 = 5[/tex]

(Loop2) [tex]-4I_2 - 2I_2 +2I_3 - 2I_4 = 8[/tex]

(Loop3) [tex]-6I_2 + 7.5I_3 - 2I_4 = 8[/tex]

(Loop4) [tex]-3I_2 - 4I_1 - 1.5I_3 = 5[/tex]

I made a matrix out of these then and row reduce them but, I don't have enough equations becuase I get a row of zeroes... which doesn't make sense to me, 4 equations, 4 unknowns and I don't see why applying Kirchoffs rules would make me end up with something like that... so I need to get another equation, but I was wondering if I've done wrong with the equations.

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