  We suggest two methods (based on flavor SU(3) symmetry) to determine the CKM
angle $\gamma$ using the decays $B_d$, $B^+ \to K \eta (\eta')$ and $B_s \to
\pi \eta (\eta')$, respectively. Rescattering effects are partly included -- we
neglect annihilation amplitudes, but do not assume any other relation between
the SU(3) invariant amplitudes. We use the fact that the amplitude (including
the Electroweak Penguin contribution) for $B_d$, $B^+ \to \pi K$ with final
state $I (isospin) =3/2$ is known as a function of $\gamma$ from the decay rate
$B^+ \to \pi^0 \pi^+$.
