Using Kirchoff's junction rule at A:

i_{1} + i_{2} = i_{3}

For the top loop counterclockwise:

4.0 - 16i_{1} + 18i_{2} - 12 = 0

Multiply by -1 and simplify

16i_{1} - 18i_{2} + 8 = 0 Eqn 1

For the lower loop counter-clockwise:

Use Kirchhoff's rules to find the current in each of the three resistors in the circuit shown. Also calculate the voltage drop across all three resistors.

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