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Math Help - "Solving linear systems using equasions"

  1. March 3rd 2009, 08:06 PM #1
    Silverstaraptor
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    Exclamation "Solving linear systems using equasions"

    They really shoulddn't be asigning this stuff in middle school. Help, PWEASE?

    3x - y = 30
    -3x + 7y =6
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  2. March 3rd 2009, 08:10 PM #2
    mr fantastic
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    Quote Originally Posted by Silverstaraptor View Post
    They really shoulddn't be asigning this stuff in middle school. Help, PWEASE?

    3x - y = 30
    -3x + 7y =6
    Multiply the top equation by 7. Now add the two equations together:

    18x = 216 etc.
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