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Add 18/28 and 9/20

18/28 + 9/20 is 153/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 20 is 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,
    9/20 = 9 × 7/20 × 7 = 63/140
  4. Add the two fractions:
    90/140 + 63/140 = 90 + 63/140 = 153/140
  5. So, 18/28 + 9/20 = 153/140
    In mixed form: 113/140

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