Question 978724
What do you mean by Zbar?
Typically it denotes the complex conjugate.
However,
{{{Z=a+bi}}}
{{{Zbar=a-bi}}}
Then,
{{{Z+Zbar=a+bi+a-bi}}}
{{{Z+Zbar=2a}}}
There is no imaginary component. 
So either there is no solution or please clarify what Zbar is.