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Add 81/20 and 1/28

1st number: 4 1/20, 2nd number: 1/28

81/20 + 1/28 is 143/35.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 20 × 7 = 140,
    81/20 = 81 × 7/20 × 7 = 567/140
  3. Likewise, for the 2nd fraction, since 28 × 5 = 140,
    1/28 = 1 × 5/28 × 5 = 5/140
  4. Add the two like fractions:
    567/140 + 5/140 = 567 + 5/140 = 572/140
  5. 572/140 simplified gives 143/35
  6. So, 81/20 + 1/28 = 143/35
    In mixed form: 43/35

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