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erica86

  • one year ago

solve the following system of equation x+3y=2, x=6-3y

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  1. prowrestler
    • one year ago
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    im trying to figure this out ok

  2. prowrestler
    • one year ago
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    i know that x=3

  3. prowrestler
    • one year ago
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    and y = 6

  4. kc_kennylau
    • one year ago
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    No, 3+3*6 is not 2

  5. kc_kennylau
    • one year ago
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    There is no solution: the two lines are parallel to each other

  6. MrNood
    • one year ago
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    rewrite as: x+3y=2, x=6-3y y=2/3-x/3 and y=2-x/3 The slope is the same (because the value before the x is -1/3 in both equations) Therefore the lines are parallel

  7. kc_kennylau
    • one year ago
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    Or substitute the second equation into the first: 6-3y+3y=2 6=2 Which makes it invalid Which makes there be no solution

  8. cece1902
    • one year ago
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    6=2

  9. MrNood
    • one year ago
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    @cece1902 BUT 6 is NOT equal to 2 - so see @kc-kennylau 's answer above...

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