We can see that resistors R2 and R3 are in parallel, so their equivalent resistance (Rp) can be found using the formula:
$$\frac{1}{Rp} = \frac{1}{R} + \frac{1}{2R}$$
Now, let's solve for Rp:
$$\frac{1}{Rp} = \frac{2 + 1}{2R} = \frac{3}{2R}$$
$$Rp =
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