How can Inverse[] be forced to return a numerical result?

Questions
1

When I use Inverse[] to return the inverse of a matrix with complex elements, the result is a matrix with a complex rational function for each element that has various powers of i in both the numerator and the denominator. I need a less symbolic result and instead one that can be used to calculate numerical values for roots, amplitudes and phase etc. I have tried N[], Simplify[] and forced floats with dots following all numeric values but none of these measures makes any difference. Looks like I´ve missed something, I would be grateful to hear how it´s done.

2

The following separates real and imaginary parts, assuming that x,y are real, leaving no I at the denominator:

expr = Inverse[{{(9 x)/44 - (11 I)/20, (21 y)/47 - (18 I)/
       71, -(21/41) - (19 I)/26}, {-(19/67) - (29 I)/33, -(3/4) + (
       3 I)/29, -(101/135) - (6 I)/7}, {3/22 - (21 I)/23, 
      22/39 + (15 I)/26, 1/85 - x (7 I)/46}}][[1, 1]];
{1, I}.FullSimplify@ComplexExpand@ReIm[expr]
3

Are you by chance using ‘i’ instead of ‘I’? Mathematica is case sensitive…