Question: In Exercises 25 and 26, find the best approximation to a solution of the given system of equations. 1. x + y - z =

In Exercises 25 and 26, find the best approximation to a solution of the given system of equations.
1. x + y - z = 2
- y + 2 z = 6
3x + 2y - z = 1 1
-x + z = 0
2. 2x + 3y + z = 2 1
x + y + z = 7
- x + y - z = 14
2y + z = 0

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