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27 August, 17:57

What's negative three over four plus one and two over seven

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  1. 27 August, 18:05
    0
    2 1/28

    Step-by-step explanation:

    Multiply both the numerator and denominator of each fraction by the number that makes its denominator equal the LCD. This is basically multiplying each fraction by 1.

    (3/4*7/7) + (9/7*4/4) = ?

    Complete the multiplication and the equation becomes

    21/28+36/28=?

    The two fractions now have like denominators so you can add the numerators.

    Then:

    21+36/28=57/28=2 1/28
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