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anonymous

  • 5 years ago

1/t-2 = t/8

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  1. anonymous
    • 5 years ago
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    Is the -2 on the bottom?

  2. anonymous
    • 5 years ago
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    The t-2 is all on the bottom

  3. anonymous
    • 5 years ago
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    Whenever you have a fraction = fraction you can cross multiply. 1 * 8 = (t - 2) * t

  4. anonymous
    • 5 years ago
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    8 = t^2 - 2t

  5. anonymous
    • 5 years ago
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    0 = t^2 - 2t - 8 0 = (t - 4)(t + 2) t = 4 or t = -2

  6. anonymous
    • 5 years ago
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    Thank You

  7. anonymous
    • 5 years ago
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    What about when you add another number into the equation? 4/3(c+4) + 1 = 2c/(c+4)

  8. anonymous
    • 5 years ago
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    Common denominator is 3(c + 4) so you put that on top of each term. 3(c+4)*4 3(c+4)*1 2c ------- + = ------- 3(c+4) c + 4

  9. anonymous
    • 5 years ago
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    Oops I missed the last term 3(c+4)*2c -------- c+4

  10. anonymous
    • 5 years ago
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    4 + 3c + 12 = 6c

  11. anonymous
    • 5 years ago
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    3c + 16 = 6c

  12. anonymous
    • 5 years ago
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    16 = 3c

  13. anonymous
    • 5 years ago
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    16/3 = c c = 16/3 or 5 1/3

  14. anonymous
    • 5 years ago
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    ok thank you 1 more

  15. anonymous
    • 5 years ago
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    (a/a+3) = (2a/a-3) -1

  16. anonymous
    • 5 years ago
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    Common denominator of (a + 3)(a - 3) so put that on top of every term

  17. anonymous
    • 5 years ago
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    (a + 3)(a - 3)a (a + 3)(a - 3)*2a (a + 3)(a - 3)*1 ------------ = -------------- - -------------- (a + 3) (a - 3) Cancel the bottoms into the top

  18. anonymous
    • 5 years ago
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    thank you so much for your help

  19. anonymous
    • 5 years ago
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    (a - 3)a = (a + 3)2a - (a + 3)(a - 3) a^2 - 3a = 2a^2 + 6a - (a^2 - 9) a^2 - 3a = 2a^2 + 6a - a^2 + 9 distribute the - sign a^2 - 3a = a^2 + 6a + 9 add like terms -3a = 6a + 9 subtract a^2 from both sides -9a = 9 subtract 6a from both sides a = -1

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spraguer (Moderator)
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is replying to Can someone tell me what button the professor is hitting...

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