$2.($a$)$ Use Kirchhoff's rules to set up FOUR equations that would allow you to solve for currents $\backslash ($ I$\_\{1\},$ I$\_\{2\}\backslash )$ and $\backslash ($ I$\_\{3\}\backslash )$ in the circuit shown in the figure. Do NOT solve these equations!

$($b$)$ The $\backslash (8.\backslash$mathrm$\{$V$\}\backslash )$ and the $16$ V batteries are not taken out of the circuit, leaving it with only the $4$ V battery. Redraw this new circuit and solve for equivalent resistance, and the currents through each resistor and the voltages across each resistor.

$($c$)$ Using complete English sentences, describe how you would use the ammeter and a voltmeter to measure current through and the voltage across the $\backslash (9-\backslash$Omega $\backslash )$ resistor. Be as specific as possible, and justify your reasoning.