Where did the plane go?

> n:=array(1.. 3,1.. 4,[[6,6,300001/100000,3000002/100000],[10,8,400003/100000,4200006/100000],[6,4,200002/100000,2200004/100000]]);

> glinsys(n);

> print(n);

Multiply row 1 by 1/6

> n1:=linalg[mulrow](n,1,1/6);

Add to row 2 -10 times row 1

> n2:=linalg[addrow](n1,1,2,-10);

> glinsys(n2);

> print(n2);

Add to row 3 -6 times row 1

> n3:=linalg[addrow](n2,1,3,-6);

> glinsys(n3);

> print(n3);

Multiply row 2 by -1/2

> n4:=linalg[mulrow](n3,2,-1/2);

Add to row 1 -1 times row 2

> n5:=linalg[addrow](n4,2,1,-1);

> glinsys(n5);

> print(n5);

Add to row 3 2 times row 2

> n6:=linalg[addrow](n5,2,3,2);

> glinsys(n6);

> print(n6);

Multiply row 3 by -300000

> n7:=linalg[mulrow](n6,3,-300000);

Add to row 1 -1/120000 times row 3

> n8:=linalg[addrow](n7,3,1,-1/120000);

> glinsys(n8);

> print(n8);

Add to row 2 -74999/150000 times row 3

> n9:=linalg[addrow](n8,3,2,-74999/150000);

> glinsys(n9);

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