Solver Giving Nothing

[rpn314]

I'm trying to simplify my life a bit with the solve in CAS. I've come across an equation that I don't understand the results of, or rather the lack of results. The equation is a type of system of equations, 2 unknowns and 2 variables.
127E-12=(a*b)/(a+b) and 8.377=((a+b)/b)^2 then solve for a and b. If I "help" it along by simplifying the second equation to be b*1.893=a, then the solve function gives me the results that I would expect. However if I enter it in just like above, it gives me nothing (returns []).

I feel like I'm missing something obvious, like a setting. Any ideas? I can post screenshots if it would help.