There are three loops in the circuit:
1. The left loop (Loop 1) containing the 7V source, 4Ω resistor, 5V source, and 6Ω resistor.
2. The right loop (Loop 2) containing the 5V source, 6Ω resistor, 2Ω resistor, and 3V source.
3. The outer loop (Loop 3) containing
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