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anonymous

  • 5 years ago

5y-3=7+4(y-2)

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  1. anonymous
    • 5 years ago
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    ok hmmm. 1. 5y - 3 + 3 = y + 4(y-2)

  2. anonymous
    • 5 years ago
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    2. 5y = y + 4y - 8 + 3

  3. anonymous
    • 5 years ago
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    (sorry missed the +3 on the right side first line)

  4. anonymous
    • 5 years ago
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    5y - 3 = y + 4y - 8

  5. anonymous
    • 5 years ago
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    ugh 1. 5y - 3 = 7 + 4y - 8

  6. anonymous
    • 5 years ago
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    5y -3 + 3 = 7 + 4y -8 +3

  7. anonymous
    • 5 years ago
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    5y = 2 + 4y

  8. anonymous
    • 5 years ago
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    5y - 4y = 3 + 4y - 4y

  9. anonymous
    • 5 years ago
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    *2

  10. anonymous
    • 5 years ago
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    y = 2

  11. anonymous
    • 5 years ago
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    thank u !!!!!!! lol now let me see if i can do it

  12. anonymous
    • 5 years ago
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    heh np, sorry, I was sloppy, this step: 5y - 4y = 3 + 4y - 4y should have had a 2 instead of the 2, not sure how I hit 3

  13. anonymous
    • 5 years ago
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    write an equivalent decimal for 0.4

  14. anonymous
    • 5 years ago
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    ok so for an equivalent to .4:

  15. anonymous
    • 5 years ago
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    you can always multipel a number by 1 to get an equivalent form of the original number, that is, number x 1 = the original number - but it just looks different

  16. anonymous
    • 5 years ago
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    so we want to get rid of the decimal point in .4

  17. anonymous
    • 5 years ago
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    so let's multiply it by 10/10 (which is 1)

  18. anonymous
    • 5 years ago
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    so .4/1 x 10/10 = 4 x10/1 x 10 = 4/10

  19. anonymous
    • 5 years ago
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    so 4/10 is an equivalent fraction to .4

  20. anonymous
    • 5 years ago
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    now if you want an equivalent decimal

  21. anonymous
    • 5 years ago
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    you can just add a .0

  22. anonymous
    • 5 years ago
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    so .4 = 4 tenths

  23. anonymous
    • 5 years ago
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    it also equals 4 tenths AND 0 hundredths

  24. anonymous
    • 5 years ago
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    so .40 is equivalent

  25. anonymous
    • 5 years ago
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    it also equals 4 tenths, 0 hundredths, and 0 thousandths

  26. anonymous
    • 5 years ago
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    so .4 = .40 = .400

  27. anonymous
    • 5 years ago
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    does that make sense? do you have any other questions?

  28. anonymous
    • 5 years ago
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    cmfb - if you want to walk through another one I'm game

  29. anonymous
    • 5 years ago
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    6 1/5 in decimal form

  30. anonymous
    • 5 years ago
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    ok, so in this case, you know the first part, which is 6.

  31. anonymous
    • 5 years ago
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    now the question is, how much is 1/5?

  32. anonymous
    • 5 years ago
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    so decimals can also be looked at as fractions, specifically, how many out of some power of 10 (depending on the number of decimals you're going after)

  33. anonymous
    • 5 years ago
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    after all, we know that 3/10 is .3

  34. anonymous
    • 5 years ago
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    because we can just move the decimal one to the left when we're dividing by 10

  35. anonymous
    • 5 years ago
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    so 6 1/5 = 6. + whatever 1/5 is if the denominator is some power of 10

  36. anonymous
    • 5 years ago
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    so 1/5 = 1/5 * 2/2 (again, multiplying by 1 always gets you the same thing) = 1*2/5*2 = 2/10

  37. anonymous
    • 5 years ago
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    2/10 means you can move the decimal to the left for the top number (one spot in this case)

  38. anonymous
    • 5 years ago
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    so 1/5 = 2/10 = .2

  39. anonymous
    • 5 years ago
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    and so 6 1/5 = 6.2

  40. anonymous
    • 5 years ago
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    thank you so much im sorry my mom called me to help with my nephews home work

  41. anonymous
    • 5 years ago
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    it's ok =) np. gl!

  42. anonymous
    • 5 years ago
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    ok got time for one more

  43. anonymous
    • 5 years ago
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    are you still there

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