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anonymous

  • 5 years ago

(4/x)+(12/x-5)=-11 solve its has two solutions can someone show me how to solve this step by step

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  1. Jit4won
    • 5 years ago
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    yes

  2. Jit4won
    • 5 years ago
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    multiply each term by x

  3. anonymous
    • 5 years ago
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    i see how yougot the denominator but that numerator i dont get it

  4. Jit4won
    • 5 years ago
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    wait

  5. Jit4won
    • 5 years ago
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    There is an easy way

  6. Jit4won
    • 5 years ago
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    Look If you have equation like a/b + c/d = e just cross multiply the denominators That is (a x d + c x b)/ bx d

  7. Jit4won
    • 5 years ago
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    here you can write (4 ( 12 -x ) + 12 X )/ X ( 12-X)= - 11

  8. Jit4won
    • 5 years ago
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    WHICH GIVES YOU (48 - 4X + 12 X )/ 12X- X^2 = -11

  9. Jit4won
    • 5 years ago
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    48 + 8X / 12X- X^2 = -11

  10. Jit4won
    • 5 years ago
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    48 + 8X = - 11( 12X - X^2)

  11. Jit4won
    • 5 years ago
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    48 + 8X = -132X + 11 X^2 11X^2 -132X -8X -48 = 0 11X^2 -140X -48 = 0

  12. Jit4won
    • 5 years ago
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    X = - b ± √(b2 - 4ac) / 2a

  13. Jit4won
    • 5 years ago
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    a = 11 b= -140 c= - 48

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