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anonymous

  • 5 years ago

x-(12-x)=38

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  1. myininaya
    • 5 years ago
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    Distribute the negative like x-12+x=38

  2. myininaya
    • 5 years ago
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    like terms 2x-12=38

  3. anonymous
    • 5 years ago
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    My math teacher wants us to show each step and Im confused

  4. myininaya
    • 5 years ago
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    add 12 to both sides: 2x=38+12

  5. myininaya
    • 5 years ago
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    2x=50

  6. anonymous
    • 5 years ago
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    then you divide

  7. myininaya
    • 5 years ago
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    Now divide both sides by 2: x=50/2=25

  8. anonymous
    • 5 years ago
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    Oh! Thankyou

  9. myininaya
    • 5 years ago
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    That's all. You not confused about any of the steps?

  10. anonymous
    • 5 years ago
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    Actually i am

  11. myininaya
    • 5 years ago
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    Where do you get stuck?

  12. anonymous
    • 5 years ago
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    The first

  13. myininaya
    • 5 years ago
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    So you know subtraction can be turned into addition right?

  14. myininaya
    • 5 years ago
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    3-5=3+(-5)

  15. anonymous
    • 5 years ago
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    Mhm

  16. anonymous
    • 5 years ago
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    yea

  17. anonymous
    • 5 years ago
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    but isnt it distributive property

  18. myininaya
    • 5 years ago
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    So we have 12+-(12-x)=38

  19. myininaya
    • 5 years ago
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    that - in front of that paranthesis can be read at -1

  20. myininaya
    • 5 years ago
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    so what is -1(12-x)?

  21. anonymous
    • 5 years ago
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    Huh??!!! you totaly confused

  22. myininaya
    • 5 years ago
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    the changing subtraction to addition?

  23. anonymous
    • 5 years ago
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    because for example she said to do multiplication during distributive property 3(12+9)

  24. myininaya
    • 5 years ago
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    Right

  25. anonymous
    • 5 years ago
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    (3*12)+(3*9)

  26. myininaya
    • 5 years ago
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    yes so what is -1(12-x)

  27. anonymous
    • 5 years ago
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    (-1*12)-(-1*x)

  28. myininaya
    • 5 years ago
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    yes which =-12+x

  29. anonymous
    • 5 years ago
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    yeeees

  30. myininaya
    • 5 years ago
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    now we have x+(-12+x)=38

  31. anonymous
    • 5 years ago
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    why do you have to change the sub sign

  32. myininaya
    • 5 years ago
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    since addition is commutative and associative we have x+x-12=38

  33. anonymous
    • 5 years ago
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    cant you just put 12x?

  34. myininaya
    • 5 years ago
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    ?

  35. myininaya
    • 5 years ago
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    x+x=2x

  36. myininaya
    • 5 years ago
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    so we have 2x-12=38

  37. anonymous
    • 5 years ago
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    then i know

  38. myininaya
    • 5 years ago
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    +12 on both sides giving us 2x=50 then divide both sides by 2

  39. anonymous
    • 5 years ago
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    from here

  40. myininaya
    • 5 years ago
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    ok

  41. anonymous
    • 5 years ago
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    ohhhhhh i get it!!

  42. anonymous
    • 5 years ago
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    i <3 you thankyou!!!!!!!11

  43. myininaya
    • 5 years ago
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    :)

  44. anonymous
    • 5 years ago
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    have an awesome day

  45. myininaya
    • 5 years ago
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    i finished it? That's all you needed? lol

  46. myininaya
    • 5 years ago
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    ok no worries lets just find your mistake

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is replying to Can someone tell me what button the professor is hitting...

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