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7 August, 07:25

What is 2/5 - [-4 7/10]

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  1. 7 August, 09:54
    0
    Answer: 5 1/10

    Solution:

    2/5-[-4 7/10]

    2/5-[ - (4*10+7) / 10]

    2/5-[ - (40+7) / 10]

    2/5-[-47/10]

    2/5+47/10

    2*2 / (5*2) + 47/10

    4/10+47/10

    (4+47) / 10

    51/10

    (50+1) / 10

    50/10+1/10

    5 1/10
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