Chapter 31 - Fundamentals of Circuits - Exercises and Problems - Page 917: 41

$R_{eq}=7\Omega$

$10\Omega$ resistor is short circuited, so there is no current through it and it will not be counted for net resistance of circuit now, $4\Omega$, $12\Omega$ and $6\Omega$ are in parallel and their equivalent resistance will be equal to $2\Omega$ now, $2\Omega$,$2\Omega$ and $3\Omega$ are in series $R_{eq} = 2\Omega + 2\Omega + 3\Omega$ $R_{eq}=7\Omega$