HP 50g LINSO Linear Solver for System of Equations

[JDW]

Gentlemen, thank you for the thoughts and suggestions. The source of my pain indeed was REAL NUMBERS (those with the wicked decimal point at right). Using REAL numbers and then pressing the rightmost SOLVE soft button yields this error:



But after changing them to INTEGERS, the rightmost SOLVE button works as expected thusly:



Thank you for the guidance!