zoku88 said:I just checked them, they're independent, I believe, unless I wrote something down incorrectly.
With row swaps, should be able to define a matrix with
1 1 0 0
0 1 1 0
0 0 1 1
1 0 0 1
t1 t2 t3 x
equation 1 + equation 3 - equation 2 = equation 4, so they are dependent, and some geometric trick is necessary to suss out one more equation.