Need some help with this equation!!!!

madmax21 said:
2x+y=17
y+z=6
x-z=7
Click to expand...

This is called a "system of equations". What class are you in? What methods have you been taught? What have you tried?

I suggest you start by adding the 2nd and 3rd equations together then proceed from there.

Please show your work.
 
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