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math

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what must be added to 6 3/5 to produce 3 5/6?

  • math - ,

    6 3 / 5 = 6 * 30 / 30 + 3 * 6 / 30 =

    180 / 30 + 18 / 30 = 198 / 30


    3 5 / 6 = 3 * 30 / 30 + 5 * 5 / 30 =

    90 /30 + 25 / 30 = 115 / 30


    6 3 / 5 + x = 3 5 / 6

    198 / 30 + x = 115 / 30

    x = 115 / 30 - 198 / 30

    x = -83 / 30

  • math - ,

    33/5 + x = 23/6
    times 30
    198 + 30x = 115
    30x = -83
    x = -83/30

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