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anonymous

  • 5 years ago

solve using the multiplication principle -1/8x=-9/10

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  1. anonymous
    • 5 years ago
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    Ok to solve for x you need to separate the x from the -1/8. you can do that two ways. You can either divide both sides by -1/8, or you can multiply by the inverse fraction (-8/1) to both sides.

  2. anonymous
    • 5 years ago
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    *x, *-9/10 x = 10/72

  3. anonymous
    • 5 years ago
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    *-10/9, I mean.

  4. anonymous
    • 5 years ago
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    That is not what I get, you should be able to multiply both sides by (-8/1) = -8, which gives you x=72/10 = 36/5 = 7 1/5

  5. anonymous
    • 5 years ago
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    so the correct answ is -10/9

  6. anonymous
    • 5 years ago
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    right thts wht i cam up with 10/72

  7. anonymous
    • 5 years ago
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    72/10

  8. anonymous
    • 5 years ago
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    I am not sure what Msc. did

  9. anonymous
    • 5 years ago
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    me either

  10. anonymous
    • 5 years ago
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    I just divied 72/10 which gave me 7.2

  11. anonymous
    • 5 years ago
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    -1/8x = -9/10 => 1/8x=9/10 Multiply by 10: 10/8x=9 Multiply by x: 9x=10/8 Divide by 9: x=10/72

  12. anonymous
    • 5 years ago
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    is tht the answer

  13. anonymous
    • 5 years ago
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    That is the correct answer, yes.

  14. anonymous
    • 5 years ago
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    I just ran it through my calc, it comes up with 7.2 also. I think you made a mistake in the second step, you can't multiple to move the x from one side to the other, you would have had to divide.

  15. anonymous
    • 5 years ago
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    oh ok

  16. anonymous
    • 5 years ago
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    so x=?

  17. anonymous
    • 5 years ago
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    It says 1/8x, not x/8 or (1/8)x. What I wrote is correct.

  18. anonymous
    • 5 years ago
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    10/72 is tht correct

  19. anonymous
    • 5 years ago
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    Yes.

  20. anonymous
    • 5 years ago
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    Technically, you should always provide the simplest solution, so a better answer would be 5/36.

  21. anonymous
    • 5 years ago
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    x = -9/10 x -8 = 72/10 = 7.2

  22. anonymous
    • 5 years ago
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    is this simplified it got to be simplify or fractions

  23. anonymous
    • 5 years ago
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    That is not correct. It clearly says (-1)/8x=(-9)/10. You have to invert the equation, or multiply by x in order to isolate for x. Unless the OP's equation is incorrect. x=5/36 is the correct answer.

  24. anonymous
    • 5 years ago
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    ok thank you so much for being patient with me

  25. anonymous
    • 5 years ago
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    No problem.

  26. anonymous
    • 5 years ago
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    thank all of u

  27. anonymous
    • 5 years ago
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    oh ok - i took the LHS to be (-1/8) * x my mistake

  28. anonymous
    • 5 years ago
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    That's what I figured ;)

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