Question

Solve the following system of equations.

4x – 2y – z = –5
x – 3y + 2z = 3
3x + y – 2z = –5
Answer
(0, 1, –3)
(0, 1, 3)
(0, –1, 3)
(0, –1, –3)

Answer 1

and basically start combining things example:-5 -(-2) =3 so just look at the problem and combine. i eliminate the first 2 answers because the 1 has to be negative not the last one because -5 -(-2) =3 not negative 3 so the3rd answer is correct