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Kirchhoff's rules: circuits with two loops

Problem

Consider the circuit shown below.
What is the current passing in the direction from start text, A, end text to start text, B, end text?
Note: Input the answer in the simplest fractional form. I, start subscript, start text, A, end text, right arrow, start text, B, end text, end subscript may be positive or negative.
I, start subscript, start text, A, end text, right arrow, start text, B, end text, end subscript, equals
  • Your answer should be
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
start text, A, end text
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