Can someone help me set up the equations Ill A third problem

Can someone help me set up the equations?

Ill. A third problem that was given on the midterm exam is to derive the value of the current lo in the following circuit. Use Matlab programming to solve for the current. 4 kn 6 kn 4 mA. Accompanying this assignment is a tutorial handout outlining how to use the Matlab software for circuit theory problem solving.

Solution

from the circuit.

i1=-2*10^-3 amps.

i3=4*10^-3 amps.

apply kvl to loop current i2.

4000i2+6000(i2-4*10^-3)-12+2000(i2+2*10^-3)=0

12000i2=24-4=20

i2=20/12000=10/6000=1/600=1.666*10^-3 amps.