8. what is the solution to the system of equations? 1 x-35-2=-9 -2x+ y + 2z = 3 | 2x + y + 3z = 8 (1,3,1) (1,3,-1) (1, -3,1) (-1,3,1)

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

Idon't take stuff like this new to me