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Add 18/28 and 30/20

1st number: 18/28, 2nd number: 1 10/20

18/28 + 30/20 is 15/7.

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,
    18/28 = 18 × 5/28 × 5 = 90/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    30/20 = 30 × 7/20 × 7 = 210/140
  4. Add the two like fractions:
    90/140 + 210/140 = 90 + 210/140 = 300/140
  5. 300/140 simplified gives 15/7
  6. So, 18/28 + 30/20 = 15/7
    In mixed form: 21/7

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