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5 December, 07:38

Adding and subtracting denominators

6/7 + 1/3

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Answers (1)
  1. 5 December, 11:22
    0
    First you need to make both denominators the same number.

    The number we can use is 21.

    6/7 : to make the denominator 21, you need to multiply the numerator and the denominator by 3.

    6 * 3 = 18

    7 * 3 = 21

    The equivalent is 18/21

    1/3 : to make the denominator 21, you need to multiply the numerator and the denominator by 7.

    1 * 7 = 7

    3 * 7 = 21

    The equivalent is 7/21

    18/21 + 7/21 = 25/21 = 1 4/21
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