SOLUTION: 2x + 3y − 6z = −11 x − 2y + 3z = 8 3x + y = 9 Solve find x ,y , z

Algebra ->  Expressions-with-variables -> SOLUTION: 2x + 3y − 6z = −11 x − 2y + 3z = 8 3x + y = 9 Solve find x ,y , z      Log On


   

Question 1015134: 2x + 3y − 6z = −11
x − 2y + 3z = 8
3x + y = 9
Solve find x ,y , z
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The 3rd eqn has no z term, so solve for y.
y = -3x + 9
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Sub for y in the 1st 2 eqns --> 2 eqns in x & z.
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Solve for x & z, then solve for y.
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I don't need the practice.
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