Solution
= Solution
Multiplying the <complex numbers> gives $b\bar z+\bar bz=2(b_1x+b_2y)$. Hence the real <linear equation> is
$$
\boxed{2b_1x+2b_2y+c=0}.
$$
= Solution
Multiplying the <complex numbers> gives $b\bar z+\bar bz=2(b_1x+b_2y)$. Hence the real <linear equation> is
$$
\boxed{2b_1x+2b_2y+c=0}.
$$