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freeG13

  • one year ago

help sorry too confused + Fan + Medal

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  1. anonymous
    • one year ago
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    To start, let's try to get all the x terms on one side and all the constants on the other. Can you do that for me?

  2. freeG13
    • one year ago
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    aren't them all ready on one side?

  3. anonymous
    • one year ago
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    The x terms are on the left, but the 6 needs to go to the right to join the 18.

  4. freeG13
    • one year ago
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    oh so I subtract 6 on both sides?

  5. anonymous
    • one year ago
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    Correct.

  6. anonymous
    • one year ago
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    You will have: \[-(2/7)x + (/17)x = 18 - 6\]

  7. anonymous
    • one year ago
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    Sorry, that's a 1/7x.

  8. anonymous
    • one year ago
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    Are you following?

  9. freeG13
    • one year ago
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    ya

  10. anonymous
    • one year ago
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    Let's evaluate both sides. 18-6 is 12. Then on the left we have \[-(2/7)x + (1/7)x\]

  11. anonymous
    • one year ago
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    So now evaluate that left side.

  12. freeG13
    • one year ago
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    hello @IParke

  13. anonymous
    • one year ago
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    Did you get an answer?

  14. freeG13
    • one year ago
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    am confused on this part

  15. anonymous
    • one year ago
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    Okay, no problem. You need to add (-2/7) + (1/7).

  16. freeG13
    • one year ago
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    1/7 ?

  17. anonymous
    • one year ago
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    That becomes your coefficient of x. The coefficient is the constant value in front of a variable.

  18. anonymous
    • one year ago
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    In this case, it is -1/7

  19. anonymous
    • one year ago
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    Do you see why?

  20. freeG13
    • one year ago
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    yes

  21. anonymous
    • one year ago
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    Okay. Great. So now you have: \[-1/7x = 12\]

  22. anonymous
    • one year ago
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    Our goal now is to get rid of that coefficient, the -1/7, in front of the x. What should we do to both sides to get rid of the -1/7?

  23. freeG13
    • one year ago
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    add 1/7 to both sides

  24. anonymous
    • one year ago
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    We should divide both sides by -1/7.

  25. anonymous
    • one year ago
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    The reason for that is because we want to get rid of the number multiplying x. If we divide that number by itself, we get 1. -1/7 divided by -1/7 is 1. 1 times X is X.

  26. anonymous
    • one year ago
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    Is this clear?

  27. freeG13
    • one year ago
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    yes i with ya

  28. anonymous
    • one year ago
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    So go ahead and divide both sides by -1/7 to get your final answer. X=?

  29. freeG13
    • one year ago
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    1.71428571429

  30. freeG13
    • one year ago
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    @IParke

  31. anonymous
    • one year ago
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    12/(-1/7) = -12/(1/7) = -(12*7)/1 = -84

  32. freeG13
    • one year ago
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    so x =-84

  33. freeG13
    • one year ago
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    thanks @IParke

  34. anonymous
    • one year ago
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    Correct. No problem. If this still doesn't make sense to you, please let me explain.

  35. freeG13
    • one year ago
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    it is ok thanks

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