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## Homework Statement

2x-y-z=3 and x+2y+3z=7

## Homework Equations

## The Attempt at a Solution

Im stumped on this problem because initially i thought all i had to do was make z, or another variable zero and then just solve. However, it then turns into a nasty problem. Most of the examples in my book, for one of the equations there are 2 variables instead of 3. Hence to make the substitution easier. So, my question is how would i start the problem then?

Any help will be appreciated