Could someone please tell me what I'm doing wrong? I'm getting decimal values, but the answers should be integers. I think I messed up in the equations.
My equations using Kirchoff's loop rule are:
12 - 500I1 - 815(I1-I3) = 0
12 - 269I2 - 439(I2 + I3) = 0
-500I1 + 269I2 = 0.
The printed question is the assignment, and the hand-drawn diagram is what I used to make the equations.

M1 = 16.9 mA

M2 = 0 A

Explanation:

As the ratio of the two sets of series resistors is almost exactly identical, there is no voltage difference across M2 to cause current flow

269/(269 + 439) = 0.3799...

500/(500 + 815) = 0.38022

M2 = 0

M1 sees only the current flowing through the far left resistors in series

A = V/R = 12/(269 + 439) = 0.016949... ≈ 16.9 mA

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