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9 February, 12:15

find the sum of-2 5/10 and-5 4/15. then, in two or more complete sentences, explain the steps you used to add the mixed numbers.

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  1. 9 February, 12:27
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    - 7 23/30

    Step-by-step explanation:

    -2 5/10 + - 5 4/15

    First simplify the fractions if possible

    -2 1/2 + - 5 4/15

    Then, we need to get a common denominator

    The common denominator in this case is 30

    -2 1/2*15/15 + - 5 4/15*2/2

    -2 15/30 + - 5 8/30

    Since the signs are alike we add

    First the whole numbers

    2+5 = 7

    Then the fractions

    15/30+8/30 = 23/30

    Add the fraction and the whole number together

    7 23/30

    Take the sign

    - 7 23/30

    If the fraction was improper, we would change it to a mixed number and add the whole numbers together
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