Solve the system by elimination (using 3equations)

[overdue]

Solve the system by elimination
5x-2y+5z=7
2x-2y-3z=9
6x-y-4z=17


You have to get a coordinate for the answer but I think I'm doing something wrong.

 

[tkhunny]

It's pretty tough to tell what you're doing wrong without you showing us what you're doing. Describe your plan. What is your first step?

 

[overdue]

Nevermind...I checked my work and I had forgotten to change negative and positive signs. Thanks anyways!