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MATH

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Please help me with these:

1. 5/8 + 5/6 =

2. 2 3/5 + 4 4/5 =

3. 13 1/2 + 7 2/3 =

4. 3/8 - 3/8 =

Thanks!

  • MATH - ,

    You'll need to change these fractions to fractions with a common denominator.

    I'll do the first one for you.

    5/8 = 15/24
    5/6 = 20/24

    (15/24) + (20/24) = 35/24 = 1 11/24

    I'll be glad to check your other answers.

  • MATH - ,

    1.


    5 / 8 = ( 3 * 5 ) / ( 3 * 8 ) = 15 / 24

    5 / 6 = ( 4 * 5 ) / ( 4 * 6 ) = 20 / 24


    5 / 8 + 5 / 6 = 15 / 24 + 20 / 24 = 35 / 24 =

    ( 24 + 11 ) / 24 =

    1 11 / 24



    2.


    2 3 / 5 + 4 4 / 5 = 2 + 4 + 3 / 5 + 4 / 5 =

    6 + 7 / 5 = 6 + ( 5 + 2 ) / 5 =

    6 + 1 + 2 / 5 = 7 2 / 5



    3.


    1 / 2 = 3 / 6

    2 / 3 = 4 / 6


    13 1 / 2 + 7 2 / 3 = 13 + 7 + 3 / 6 + 4 / 6 =

    20 + 7 / 6 =

    20 + ( 6 + 1 ) / 6 =

    20 + 1 + 1 / 6 =

    21 1 / 6



    4.


    3 / 8 - 3 / 8 = 0

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