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Thread: Help me I do not know what does this math thingy means!

  1. #1
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    Unhappy Help me I do not know what does this math thingy means!

    Simplifying
    4k + 39 = 7k + 6

    Reorder the terms:
    39 + 4k = 7k + 6

    Reorder the terms:
    39 + 4k = 6 + 7k

    Solving
    39 + 4k = 6 + 7k

    Solving for variable 'k'.

    Move all terms containing k to the left, all other terms to the right.

    Add '-7k' to each side of the equation.
    39 + 4k + -7k = 6 + 7k + -7k

    Combine like terms: 4k + -7k = -3k
    39 + -3k = 6 + 7k + -7k

    Combine like terms: 7k + -7k = 0
    39 + -3k = 6 + 0
    39 + -3k = 6

    Add '-39' to each side of the equation.
    39 + -39 + -3k = 6 + -39

    Combine like terms: 39 + -39 = 0
    0 + -3k = 6 + -39
    -3k = 6 + -39

    Combine like terms: 6 + -39 = -33
    -3k = -33

    Divide each side by '-3'.
    k = 11

    Simplifying
    k = 11

    I don't know how to memorize this. Please help me memorize!

  2. #2
    Veteran Kuujoe's Avatar
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    What is the formula called?

  3. #3
    Street Boss Vacci's Avatar
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    I'll explain more later but basically, put all the K's on one side. and all the things without K's on the other. You don't have to be specific with sides unless it makes you more comfortable that way.

    To undo addition, you subtract.
    to undo subtraction, you add.
    to undo multiplication, you divide
    to undo division, you multiply.

    The final goal is to get K by itself.
    Author of EraAWSD: http://era-go.com/forum/showthread.p...l=1#post195094 (Updated 15-09-2015)

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  4. #4
    Math!

    4k + 39 = 7k + 6
    Subtract 7k - 4k = 3k
    (Subtracting, but why? 7k is a big number and 4k is small, therefore minus the big to the smallest)

    39 = 3k + 6
    Subtract 39 - 6 = 25
    (You must have the 3k alone! So subtract the 6 with 39! 39 - 6. If 6 was negative [39 = 3k - 6] then it'll be adding to 39, but in this case, it'll be subtracting)

    3k = 33
    (Okay.. Almost there.. Lets leave the k alone, or the variable, divide 3 by both side. 3k / 3, 3 is cancelled! 33 / 3, do the math!)
    k = 11
    (Good job, I suck at teaching!)

  5. #5
    Soldier Chillinice's Avatar
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    all steps needed

    ~put the Ks on one side and the numbers on another: 4k+39=7k+6 becomes 39-6=7k-4k
    ~subtract like terms: 39-6 is 33=7k-4k is 3k which becomes 33=3k
    ~simplify to the most: 33=3K is ur answer at the moment but u need the Ks to become K not 3K so simplify it to K, since its 3K, u should divide it by 3, but u should divide the number on the other side by 3 too, 33/3=3K/3 which becomes 11=K
    ~make the K on the first side( I don't know about u but its needed in our school): 11=K therefore it becomes K=11

    happy face

    edit: math is easy, I just don't follow my teacher's ways and develop my own much easier ways, u should try doing that.
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  6. #6
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    Wow! All of you are amazing, Thank you!

  7. #7
    Just remember that you always want to isolate the variable (the k, in this situation).
    Former iEra Player Relations / Gani Artist

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  8. #8
    Quote Originally Posted by Dio the awesome View Post
    Wow! All of you are amazing, Thank you!
    If you ever need more help with mask, just ask us.
    Computer Science major? I don't know. What's GS2?
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  9. #9
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    I don't think he'll be asking more...

  10. #10
    Street Boss I MASTER's Avatar
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    Quote Originally Posted by XSTARX View Post
    I don't think he'll be asking more...
    Lmao

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