Find the magnitude and direction of the current flowing through the resistance R in the circuit shown in Fig. 3.44 if the emf's of the sources are equal to ε1= 1.5 V and ε2 = 3.7 V and the resistances are equal to R1 = 10 Ω, R2 = 20 Ω, R = 5.0 Ω. The internal resistances of the sources are negligible.

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R2 62 R7