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**1. Homework Statement**

x+2y+6z=4

-3x+2y-z=-4

4x+2z=16

**2. Homework Equations**

I am having trouble solving this equation since i was absent for notes

I would appreciate an attempt to explain the process to me.

**3. The Attempt at a Solution**

I know the basics but if some one could show me step by step mabey i will get it.