Adv. Math

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How do you get these problems??
1 3/4 + 4/5 and 3 1/8 - 1 1/2

  • Adv. Math -

    When you add and subtract fractions, you need to use their common denominators.

    1 3/4 + 4/5 = 1 15/20 + 16/20 = 1 31/20 = 2 11/20

    Use the same method to solve your subtraction problem. We'll be glad to check your answer.

  • Adv. Math -

    Then does 3 1/8 - 1 1/2 = 2 3/8??

  • Adv. Math -

    No. Sorry.

    3 1/8 - 1 4/8 = 2 9/8 - 1 4/8 = ?

  • Adv. Math -

    Ohhhhhh ok now i understand it you have to borrow from the whole number right?

  • Adv. Math -

    Right! :-)

  • Adv. Math -

    Ohh ok thank you so much for your help =]

  • Adv. Math -

    You're very welcome. :-)

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