Question

Solve the system of equations using matrices. Use Gaussian elimination with back- substitution.
x+y+z = -5 x-y+3z = -1 4x+y+z = -2

Answer 1

x+y+z is wat

Answer 2

@musically2332 what do you mean?

Answer 3

oh sorry i was asking u its xyz

Answer 4

okay so what does that mean?

Answer 5

{x + y + z = -5 , x - y + 3 z = -1, 4 x + y + z = -2} ?

Answer 6

@robtobey it an equation

Answer 7

so how do i solve those equations @robtobey typed?

Answer 8

you have to use
like terms

Answer 9

-5(x-y+3z
3zx-y

Answer 10

-1 4x+y +z =-2

Answer 11

okay now I'm really confused, what do i solve specifically

Answer 12

http://www.stattrek.com/matrix-algebra/system-of-equations.aspx