Question

Solve the system by elimination.

Answer 1

How do I start to solve this?

Answer 2

So first you would subtract one equation from another.

Answer 3

So,

-2x + 2y +3z - 2x -y + z?

Answer 4

I took the first equation and subtracted it by the second, although I don't think that looks right...

Answer 5

@SpooksDF

Answer 6

Its actally not subtraction... Sorry about that... You would add them together to cancel out one variable so you can solve for the rest.

Answer 7

http://www.mathwarehouse.com/algebra/planes/systems/how-to-solve-systems-3-variables-elimination.php that is a better explaination.