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-   -   9th grade algebra test (https://www.askmehelpdesk.com/showthread.php?t=494097)

  • Aug 1, 2010, 11:51 PM
    waipahu2student
    9th grade algebra test
    how do you multiply fractions? Like 1/2x3/4 and I need answers on how to divide them, add them, and subtract them. Thank you and please explain.
  • Aug 2, 2010, 12:19 AM
    Unknown008



    In multiplication, you multiply the numerators and the denominators:



    If you want to divide, then you need to reverse the second fraction:



    Then, you proceed with multiplication.

    In addition:



    The usual way around is to find the lowest common multiple of the denominators. In this case, the LCM of 2 and 4 is 4. Then, you change the fractions so that they are on the same denominator.





    Once the denominators are the same, you perform the calculation with the numerators, that is:



    Subtraction is similar. You only change the sign, like this:



    Can you post what you get? :)
  • Aug 6, 2010, 07:16 PM
    waipahu2student
    Oh m gosh thank you so much I loooove you thanks I really need it its for algebra so I got an a-wesome
  • Aug 7, 2010, 12:32 AM
    Unknown008
    You're welcome :)
  • Aug 8, 2010, 01:38 AM
    morgaine300

    Is it my imagination or does that subject title say "test" in it?

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