Q$2(35$ pts$)$

a$)$ Calculate the Thevenin equivalent of the circuit in Fig. $1,$ to the left of points $\backslash ($ A B $\backslash ).$ Redraw the circuit with the Thevenin equivalent

Figure $1$ Resistance are in ohms

Calculate current through DC source $2($S$2).$

b$)$ Using superposition theorem calculate the current I$3.$