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foreverkamixo

  • 3 years ago

4(j-7)=12

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  1. foreverkamixo
    • 3 years ago
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    @Butterfly16

  2. jim_thompson5910
    • 3 years ago
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    Hint: either distribute to get 4j - 28 = 12 or divide both sides by 4 to get j - 7 = 3

  3. foreverkamixo
    • 3 years ago
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    Wouldn't it be 4j-28=12

  4. jim_thompson5910
    • 3 years ago
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    thats one way to go, what do you get when you solve that

  5. foreverkamixo
    • 3 years ago
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    Yeah

  6. foreverkamixo
    • 3 years ago
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    I add 28?

  7. geerky42
    • 3 years ago
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    Yes.

  8. geerky42
    • 3 years ago
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    Then divide both sides by 4.

  9. foreverkamixo
    • 3 years ago
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    Ok thank you :)

  10. geerky42
    • 3 years ago
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    Glad we helped.

  11. foreverkamixo
    • 3 years ago
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    7(2p+3)-8=6p+29

  12. foreverkamixo
    • 3 years ago
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    14p+21-8=6p+29 ?

  13. jim_thompson5910
    • 3 years ago
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    good so far

  14. jim_thompson5910
    • 3 years ago
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    what's next

  15. foreverkamixo
    • 3 years ago
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    Subtract 6p?

  16. jim_thompson5910
    • 3 years ago
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    yep

  17. jim_thompson5910
    • 3 years ago
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    14p+21-8=6p+29 14p+21-8 - 6p = 29 then what

  18. foreverkamixo
    • 3 years ago
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    8p+21-8=29?

  19. jim_thompson5910
    • 3 years ago
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    good, next step?

  20. foreverkamixo
    • 3 years ago
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    Add 8? I don't know

  21. jim_thompson5910
    • 3 years ago
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    or you can combine 21-8 to get 13 this gives you 8p+13 = 29 then you can subtract 13 from both sides to get 8p = 29-13

  22. foreverkamixo
    • 3 years ago
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    Ohh

  23. jim_thompson5910
    • 3 years ago
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    so 8p = 16 p = ??

  24. foreverkamixo
    • 3 years ago
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    2

  25. jim_thompson5910
    • 3 years ago
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    you got it

  26. foreverkamixo
    • 3 years ago
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    :)

  27. foreverkamixo
    • 3 years ago
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    3x-9=7.5+5x

  28. foreverkamixo
    • 3 years ago
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    Butterfly!! :)

  29. Butterfly16
    • 3 years ago
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    Haha here I am :o) 3x-9=7.5+5x What do we do first? I know you know it :o)

  30. foreverkamixo
    • 3 years ago
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    subtract 5x?

  31. Butterfly16
    • 3 years ago
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    Think of it like this: 3-5 or 5-3? :o)

  32. foreverkamixo
    • 3 years ago
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    5-3

  33. foreverkamixo
    • 3 years ago
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    -9=7.5+2x

  34. Butterfly16
    • 3 years ago
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    Fantastic! Now, solve for x! Tell me what you do next :o)

  35. foreverkamixo
    • 3 years ago
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    add 9?

  36. Butterfly16
    • 3 years ago
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    Nope. Remember, when you take from one side, you must take from the side with the x. So instead, take the 7.5 from the side with the x. :o)

  37. foreverkamixo
    • 3 years ago
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    Ohh so -7.5

  38. Butterfly16
    • 3 years ago
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    You got it! :o)

  39. foreverkamixo
    • 3 years ago
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    x=-8.25

  40. Butterfly16
    • 3 years ago
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    Great job! I knew you could do it. :o)

  41. foreverkamixo
    • 3 years ago
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    a-5/10=2a-3/5

  42. foreverkamixo
    • 3 years ago
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    a=1/10

  43. Butterfly16
    • 3 years ago
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    \[\frac{ a-5 }{ 10 }=\frac{ 2a-3 }{ 5 }\] Cross multiply :o) \[10(2a-3)=5(a-5)\] Distribute \[20a-30=5a-25\]\[15a-30=-25\]\[15a=5\]\[a=\frac{ 5 }{ 15 }\]\[a=\frac{ 1 }{ 3 }\] Do you see how I got that? :o)

  44. foreverkamixo
    • 3 years ago
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    Wait which do I cross multiply?

  45. Butterfly16
    • 3 years ago
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    For the original equation, you're first going to cross multiply. So, a-5 times the 5, and then the 2a-3 times the 10.

  46. foreverkamixo
    • 3 years ago
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    I'm still not seeing it :/

  47. foreverkamixo
    • 3 years ago
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    I have some family coming over in 15 minutes and I have to go with them to town. Will you be on later so we can do this later?

  48. Butterfly16
    • 3 years ago
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    Yup, I'll type up some instructions on that one and message it to you for when you get back. :o)

  49. foreverkamixo
    • 3 years ago
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    Ok thank you! Talk t you soon :)

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