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newbold_galen Group Title

solution again! 2x-y=-7 4x-y=-4

  • one year ago
  • one year ago

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  1. hartnn Group Title
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    Subtract those 2 equations, what you get ?

    • one year ago
  2. shaik0124 Group Title
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    multiply first equation by 2 and subtract both equations

    • one year ago
  3. newbold_galen Group Title
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    y=18?

    • one year ago
  4. mustry Group Title
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    y=10 and x=3/2

    • one year ago
  5. mustry Group Title
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    use substitution method

    • one year ago
  6. newbold_galen Group Title
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    can you show me how you got that? this stuff confuses me. seem to always to it wrong

    • one year ago
  7. mustry Group Title
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    take first equation 2x-y=-7

    • one year ago
  8. newbold_galen Group Title
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    k

    • one year ago
  9. mustry Group Title
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    2x=-7+y y=2x+7.......(1) put value of y in second equation

    • one year ago
  10. mustry Group Title
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    ll be 4x-(7+2x)=-4

    • one year ago
  11. mustry Group Title
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    4x-7-2x=-4

    • one year ago
  12. mustry Group Title
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    2x=7-4

    • one year ago
  13. mustry Group Title
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    x=3/2

    • one year ago
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