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anonymous

  • one year ago

Kisha and Rae are asked to solve –5x – 14 = 2x + 7. Identify where one of them made an error. Kisha Rae –5x – 14 = 2x + 7 –5x – 14 – 2x = 2x + 7 – 2x –7x – 14 = 7 –7x – 14 + 14 = 7 + 14 –7x = 21 Negative 7x over negative 7 equals 21 over negative 7 x = – 3 –5x – 14 = 2x + 7 –5x – 14 + 5x = 2x + 7 + 5x –14 = 7x + 7 –14 + 7 = 7x + 7 + 7 –7 = 7x x = – 1 (1 point) Rae made the error when she added 7 Rae made the error when she added 5x Kisha made the error when she subtracted 2x Kisha made the error when she divided by –7

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  1. rishavraj
    • one year ago
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    wht do u think whose solution is correct??

  2. anonymous
    • one year ago
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    B

  3. rishavraj
    • one year ago
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    u mean Rae made the error when she added 5x???? why so??? its totally fine u see.... bcoz of tht step x gets eliminated from a side of the equality

  4. anonymous
    • one year ago
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    oh sorry

  5. rishavraj
    • one year ago
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    Rae added 7 on both sides which makes no sense all......though if she would hav subtracted 7 then it would make some sense

  6. anonymous
    • one year ago
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    im still confused sorry

  7. rishavraj
    • one year ago
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    if she would hav subtracted 7 on both sides it would be -14 - 7 = 7x + 7 - 7 -21 = 7x x = -3

  8. anonymous
    • one year ago
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    thanks so much

  9. rishavraj
    • one year ago
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    yw...:)) btw u undrstood?

  10. anonymous
    • one year ago
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    can you help me with more questions i have?

  11. rishavraj
    • one year ago
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    i am afraid i can't...i gotta get ready for college.......

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