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Math Help - Is this correct?

  1. #1
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    Smile Is this correct?

    Solve using the addition and multiplication principles:

    13/5a + 9/4 = 37/8
    13/5a + 9/4 - 9/4 = 37/8 - 9/4
    13/5a = 28/4
    5/13 * 13/5a = 28/4
    a = 28/4 * 5/13
    a = 140/52

    Please let me know if I'm doing this right.

    Thank you!
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  2. #2
    Senior Member Stroodle's Avatar
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    Method is correct, but you need to have a common denominator when adding or subtracting fractions. So instead of \frac{37}{8}-\frac{9}{4} it should be \frac{37}{8}-\frac{18}{8}
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  3. #3
    RRH
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    Quote Originally Posted by YamahaR62002 View Post
    Solve using the addition and multiplication principles:

    13/5a + 9/4 = 37/8
    13/5a + 9/4 - 9/4 = 37/8 - 9/4
    13/5a = 28/4
    5/13 * 13/5a = 28/4
    a = 28/4 * 5/13
    a = 140/52

    Please let me know if I'm doing this right.

    Thank you!
    you did not subtract \frac{37}{8}-\frac{9}{4} correctly

    the correct answer is \frac{19}{8} try reworking the problem with this information
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  4. #4
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    Smile

    So it would be

    13/5a = 37/8 - 18/8

    5/13 * 13/5a = 19/8

    then

    a = 19/8 * 5/13

    a = 95/104

    OR I am just out of this world!

    Let me know if I got it right, please!
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  5. #5
    Senior Member Stroodle's Avatar
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    THat's correct
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  6. #6
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    Can I simplify it any further?
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  7. #7
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    THANK YOU TWO VERY MUCH!

    *****
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