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need some more help with sis homework . . . .???

Discussion in 'Random Ramblings' started by lcw1995, Feb 24, 2011.

  1. lcw1995

    lcw1995 Chillin' With My Peeps

    Nov 27, 2010
    Marysville Ohio
    i really dont know to well but i need to find out how you solve

    2/10 + n = 1??
    I DONT KNOW HOW TO DO THIS ONE

    n + 1/12 = 7/12
    6/12? PRETTY SURE

    5/8 - n = 3/8
    2/8 PRETTY SURE

    9/10 - n = 1/5
    I DONT KNOW HOW TO DO THIS ONE
     
    Last edited: Feb 24, 2011
  2. booker81

    booker81 Redneck Tech Girl

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    Quote:Subtract 2/10 from both sides to get the "letter" on one side and the numbers on the other side.
    2/10(- 2/10) + n = 1(- 2/10)

    n = 1-2/10

    Do the number math on the right side.
    n = 10/10 -2/10

    n = 8/10
    Reduce if needed (Dunkopf might have to check me here [​IMG]
    n=4/5
     
  3. lcw1995

    lcw1995 Chillin' With My Peeps

    Nov 27, 2010
    Marysville Ohio
    Quote:Subtract 2/10 from both sides to get the "letter" on one side and the numbers on the other side.
    2/10(- 2/10) + n = 1(- 2/10)

    n = 1-2/10

    Do the number math on the right side.
    n = 10/10 -2/10

    n = 8/10
    Reduce if needed (Dunkopf might have to check me here [​IMG]
    n=4/5

    how about the others. clicked submit before i typed the others out. haa.
     
  4. booker81

    booker81 Redneck Tech Girl

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    Mid-MI
    Make sure to check if you can reduce [​IMG]


    Move the numbers over the the other side and change the fractions like you did on the previous thread. You are doing good!
     
  5. booker81

    booker81 Redneck Tech Girl

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    Quote:
     
  6. Kansaseq

    Kansaseq Prairie Wolf Farm Asylum

    Feb 12, 2009
    NE Kansas
    Well, I'm rusty, but..............
    Might be easier to change 2/10 into a decimal first. You divide 2 into 10, which gives you .2

    So you have

    .2 + n = 1

    You have to get n by itself. To do that, you need to move .2 by subtracting it from both sides of the equation.

    .2 - .2 + n = 1 - .2

    n=.8

    Now, to change it back to a fraction .8 is the same as 8 tenths, or 8/10

    n= 8/10 or n=4/5
     
  7. lcw1995

    lcw1995 Chillin' With My Peeps

    Nov 27, 2010
    Marysville Ohio
    alright so
    1. 4/5
    2. 1/6?
    3.1/4or 1/2? idk!
    4 ???
     
  8. booker81

    booker81 Redneck Tech Girl

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    25
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    Apr 18, 2010
    Mid-MI
    Quote:
    9/10 - n = 1/5
    Subtract -9/10 from both sides to get the "letter" on one side and the numbers on the other side.
    9/10(-9/10) - n = 1/5 (- 9/10)

    - n = 1/5 -(9/10)

    Do the number math on the right side - correct your fractions to match up (so multiply 1/5 times 2/2 to get 2/10)
    - n = 2/10 -9/10

    -n = - 7/10
    Multiply by -1 to get rid of that pesky negative.
    n = 7/10

    Reduce if needed (It's not)

    Now, you can check your work by taking "N" and plugging back in.

    9/10 -7/10 = 1/5

    2/10 = 1/5

    Reduce.

    1/5 = 1/5
     
  9. lcw1995

    lcw1995 Chillin' With My Peeps

    Nov 27, 2010
    Marysville Ohio
    Quote:
    9/10 - n = 1/5
    Subtract -9/10 from both sides to get the "letter" on one side and the numbers on the other side.
    9/10(-9/10) - n = 1/5 (- 9/10)

    - n = 1/5 -(9/10)

    Do the number math on the right side - correct your fractions to match up (so multiply 1/5 times 2/2 to get 2/10)
    - n = 2/10 -9/10

    -n = - 7/10
    Multiply by -1 to get rid of that pesky negative.
    n = 7/10

    Reduce if needed (It's not)

    Now, you can check your work by taking "N" and plugging back in.

    9/10 -7/10 = 1/5

    2/10 = 1/5

    Reduce.

    1/5 = 1/5


    1.4/5
    2.1/6
    3.1/4
    4.1/5
     
  10. booker81

    booker81 Redneck Tech Girl

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    Yup! Make sure you and sis understand how I got where I got to with them through the steps. If you want, can PM me. I'll be up early.

    I love math, especially algebra. You might think that it's totally useless junk, until you go into many different types of jobs - and then it's EVERYTHING. Even my job now isn't specifically math based, but having a very good idea on how to algebra makes problem solving MUCH nicer.

    Just remember to reduce - I always forget to - still.
     

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