Question 1111169
Solve the system of linear equations.  Write your answer as an ordered pair (x, y, -3).

x - y + 2z = 22
   3y  - 8z = -9
             z = -3
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Sub for z in the 1st 2 eqns:
x - y - 6 = 22
   3y  +24 = -9
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Solve the 2nd eqn for y.
Then solve for x.
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Write it any way you like.