Solving Electrical Currents Equations

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neb1627
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9 - 2.7(I) - .038(I) = 0
13 - .023(I) + 2.7(I) - 9 = 0

I don't know how the dead battery effects it and how to figure out the
different currents thru the different resistors
 
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Kirchoff Loop rules. Remeber that when you jump start a car, you are "restarting" the battery as well.