./gauss

 3.333000000000000 15920.000000000000000 -10.333000000000000 15913.000000000000000
 2.222000000000000 16.710000000000001 9.612000000000000 28.544000000000000
 1.561100000000000 5.179100000000000 1.685200000000000 8.425400000000000
 -----------------------
 -----układ po zamianie-------
 3.33300000000000018474 15920.00000000000000000000 -10.33300000000000018474 15913.00000000000000000000
 2.22199999999999997513 16.71000000000000085265 9.61200000000000009948 28.54400000000000048317
 1.56109999999999993214 5.17910000000000003695 1.68520000000000003126 8.42539999999999977831
 --------układ po jedynce i zerach----
 1.00000000000000000000 4776.47764776477652048925 -3.10021002100210019137 4774.37743774377395311603
 0.00000000000000000000 -10596.62333333333481277805 16.50066666666666748142 -10580.12266666666619130410
 0.00000000000000000000 -7451.38015592559167998843 6.52493786378637885548 -7444.85521806180531712016
 -----------------------
 -----układ po zamianie-------
 1.00000000000000000000 4776.47764776477652048925 -3.10021002100210019137 4774.37743774377395311603
 0.00000000000000000000 -10596.62333333333481277805 16.50066666666666748142 -10580.12266666666619130410
 0.00000000000000000000 -7451.38015592559167998843 6.52493786378637885548 -7444.85521806180531712016
 --------układ po jedynce i zerach----
 1.00000000000000000000 4776.47764776477652048925 -3.10021002100210019137 4774.37743774377395311603
 0.00000000000000000000 1.00000000000000000000 -0.00155716270623314896 0.99844283729376670511
 0.00000000000000000000 0.00000000000000000000 -5.07807342498669811448 -5.07807342498745128978
 -----------------------
 -----układ po zamianie-------
 1.00000000000000000000 4776.47764776477652048925 -3.10021002100210019137 4774.37743774377395311603
 0.00000000000000000000 1.00000000000000000000 -0.00155716270623314896 0.99844283729376670511
 0.00000000000000000000 0.00000000000000000000 -5.07807342498669811448 -5.07807342498745128978
 --------układ po jedynce i zerach----
 1.00000000000000000000 4776.47764776477652048925 -3.10021002100210019137 4774.37743774377395311603
 0.00000000000000000000 1.00000000000000000000 -0.00155716270623314896 0.99844283729376670511
 0.00000000000000000000 0.00000000000000000000 1.00000000000000000000 1.00000000000014832580
 -----------------------

 Wyniki:

 X1 = +1.00000000000000000000

 X2 = +1.00000000000000000000

 X3 = +1.00000000000014832580