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newbold_galen

  • 3 years ago

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

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  1. hartnn
    • 3 years ago
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    Subtract those 2 equations, what you get ?

  2. shaik0124
    • 3 years ago
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    multiply first equation by 2 and subtract both equations

  3. newbold_galen
    • 3 years ago
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    y=18?

  4. mustry
    • 3 years ago
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    y=10 and x=3/2

  5. mustry
    • 3 years ago
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    use substitution method

  6. newbold_galen
    • 3 years ago
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    can you show me how you got that? this stuff confuses me. seem to always to it wrong

  7. mustry
    • 3 years ago
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    take first equation 2x-y=-7

  8. newbold_galen
    • 3 years ago
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    k

  9. mustry
    • 3 years ago
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    2x=-7+y y=2x+7.......(1) put value of y in second equation

  10. mustry
    • 3 years ago
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    ll be 4x-(7+2x)=-4

  11. mustry
    • 3 years ago
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    4x-7-2x=-4

  12. mustry
    • 3 years ago
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    2x=7-4

  13. mustry
    • 3 years ago
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    x=3/2

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