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rsher2295 Group Title

2x+3y=3 x-12y=-9 solve for x and y

  • 2 years ago
  • 2 years ago

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  1. jwt625 Group Title
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    it's wrong

    • 2 years ago
  2. jwt625 Group Title
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    x=1/3,y=7/9

    • 2 years ago
  3. jwt625 Group Title
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    the answer should be x=1/3,y=7/9

    • 2 years ago
  4. 101Ryan101 Group Title
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    the mistake was leaving a -9 instead of a 3 in the substitution of the first equation...

    • 2 years ago
  5. agradecompetent Group Title
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    2x+3y=3 x-12y=-9 make x the subject in the 2nd eqn x=12y-9 put it into the first eqn 2(12y-9)+3y=-9 24y-18+3y=-9 27y-18=-9 27y=-27 y=-1 put y=-1 into 2x+3y=3 2x-3=3 2x=6 x=3 x=3, y=-1

    • 2 years ago
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