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Add 27/28 and 25/20

1st number: 27/28, 2nd number: 1 5/20

27/28 + 25/20 is 31/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 20 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 28 × 5 = 140,
    27/28 = 27 × 5/28 × 5 = 135/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    25/20 = 25 × 7/20 × 7 = 175/140
  4. Add the two like fractions:
    135/140 + 175/140 = 135 + 175/140 = 310/140
  5. 310/140 simplified gives 31/14
  6. So, 27/28 + 25/20 = 31/14
    In mixed form: 23/14

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