Question

Question 1 (10 points)

Solve the system of the linear equations with three variables:
x + y + 3z = 3
2x + y +6z = 2
2x- y + 3z = -7

Answer 1

x= -2 y = 4 z = 1/3 solve by using gauss elimination or Cramer's rule, or matrix inversion method or row equivalent matrix method