Question

Solve the following system of equations.

2x + 4y - 3z = -7
3x + y + 4z = -12
x + 3y + 4z = 4

(-6, -2, -1)

(6, -2, -1)

(-6, 2, 1)

(6, 2, 1)

Answer 1

rref it

Answer 2

you can try and plug the values of x,y, and z into the equations, that are available in your oprions

Answer 3

put the system in a matrix and row reduce it.

Answer 4

http://www.wolframalpha.com/input/?i=solve+ {2x+%2B+4y+-+3z+%3D+-7+%2C3x+%2B+y+%2B+4z+%3D+-12%2C+x+%2B+3y+%2B+4z+%3D+4}