# A resistor triangle

In the above circuit, all the resistors marked $$R$$ have a resistance equal to $$5 \Omega$$. All of the batteries have electromotive forces of $$4.5 \text{V}$$ and an internal resistance of $$3 \Omega$$.

Calculate the intensities of the currents $$I_R$$ and $$I_B$$ through the resistors marked $$R$$ and through the batteries, respectively. Input the answer as the sum of the intensities of these two currents in Amperes. If the polarities of the currents are negative, reverse them.

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