SOLUTION: 6x+2y-3z=-17;7x-5y+z=72;2x+8y+3z=-21 solve by elimination

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Question 1049750: 6x+2y-3z=-17;7x-5y+z=72;2x+8y+3z=-21
solve by elimination
Answer by Alan3354(69443) About Me  (Show Source):
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6x+2y-3z=-17
7x-5y+z=72
2x+8y+3z=-21
solve by elimination
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Multiply the 2nd eqn by 3, then eliminate z.
You'll have 2 eqns in x & y.