Bug in solve app?

[MrMcChicken]

Hello, somehow I think I found a bug in the solve app.
If I enter two equations:
-5.5=A*-15.5+B*-50.5
-14.1=A*-39.5+B*-4.5

The shown result is:
A: 0.357...
B: -6.75...

But this is not correct. If I enter the equations in the linear solver app
the results are:
A:0.35...
B:-0.000675...

Those are correct. Is there something wrong or have I messed up some settings?