Solve the following system of equations.

x + 4y + z = –10
3x – 3y + 6z = –21
x + 2y + 2z = –10
Answer (–4, –1, –2)
(2, –2, –4)
(–3, –2, –3)
(1, –2, –3)

Question

Solve the following system of equations.

x + 4y + z = –10
3x – 3y + 6z = –21
x + 2y + 2z = –10
Answer    (–4, –1, –2) 
   (2, –2, –4) 
   (–3, –2, –3) 
   (1, –2, –3)

anonymous · Answer

Are you looking for help, or just answers?

anonymous · Answer

good question. because if  you just want the answers you can find them in 5 seconds

anonymous · Answer

help

anonymous · Answer

Ok, well with systems like this, what you're trying to do is to find ways to eliminate variables by adding or subtracting muiltiples of the equations from each other.

For example, I'd start by noting that equation 2 minus 3 times equation 3 will eliminate both the x and the z variables from the equation. That will allow you to solve for y.

anonymous · Answer

Did you solve this yet David?