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anonymous

  • 4 years ago

Solve using two different methods. Can someone please explain?! 3x - 9y = 3 6x - 3y = -24

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  1. anonymous
    • 4 years ago
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    one method is to solve by deleting x or y and make one of them alone the other one is to use substitute : substitute "x as y" or "y as x"

  2. anonymous
    • 4 years ago
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    multiply the first equation by -2 and add to the second. you get \[-6x+18y=-6\] \[6x-3y=-24\] add to get \[12y=-30\] so \[y=-5\] that is one method

  3. anonymous
    • 4 years ago
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    ok that was wrong. add to get \[15y=-30\] so \[y=-2\]

  4. anonymous
    • 4 years ago
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    lololol what?

  5. anonymous
    • 4 years ago
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    |dw:1327439457475:dw|

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