precalculus matrice

Question

Solve the system of linear equations, using the Gauss-Jordan elimination method. (If there is no solution, enter NO SOLUTION. If there are infinitely many solutions, express your answer in terms of the parameters t and/or s.)

3x	−	2y	+	z	=	5
x	+	3y	−	4z	=	−2
2x	−	3y	+	5z	=	5
x	−	8y	+	9z	=	9

Answer 1

x=-2

y=8.8

z=-6.6

using RREF in matrix form