Can this equation be solved? If so how?
I would like to find both $X$ and $Z$ .
where $Z$ is known to be in the range of $0.1931$ to $0.2352$
and $X$ is known to be in the range of $0.3549$ to $0.5576$
Ps. I am new here so if I could phrase my title better or format my question better please tell me. Also I don't know what type of equation this would be, that is if it is a legitimate equation, so I may have tagged it incorrectly.