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anonymous

  • one year ago

1. alicia and jamal completed the following " given : 3x+7=x-5 prove: x=-6 who completed the proof correctly?

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  1. texaschic101
    • one year ago
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    I can't see how each one completed it...but I would do it this way.. 3x + 7 = x - 5 --- subtract x from each side 3x - x + 7 = -5 -- now subtract 7 from both sides 3x - x = -5 - 7 -- now simplify 2x = - 12 -- now divide both sides by 2 x = -6

  2. texaschic101
    • one year ago
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    but there are other ways

  3. anonymous
    • one year ago
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    this is how 3x+7=x-5 : given 2x+7=-5: subtraction property of equality 2x=-12: subtraction property of quality x=-6: division property of equality for alicia

  4. anonymous
    • one year ago
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    and jamals 3x+7=x-5 : given 7=-2x-5 : subtraction property of equality 12=-2x: addition property of equality -6=x : division property of equality

  5. anonymous
    • one year ago
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    a) alicia only b) jamal only c) both alicia and jamal d) neither alicia nor jamal

  6. texaschic101
    • one year ago
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    oh....they both look correct to me....glad you put the answer choices...I was thinking there could only be one of them right..lol....they are both correct

  7. anonymous
    • one year ago
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    thanks so much

  8. texaschic101
    • one year ago
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    sure thing :)

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