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Add 35/20 and 18/28

1st number: 1 15/20, 2nd number: 18/28

35/20 + 18/28 is 67/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 28 is 140
  2. For the 1st fraction, since 20 × 7 = 140,
    35/20 = 35 × 7/20 × 7 = 245/140
  3. Likewise, for the 2nd fraction, since 28 × 5 = 140,
    18/28 = 18 × 5/28 × 5 = 90/140
  4. Add the two fractions:
    245/140 + 90/140 = 245 + 90/140 = 335/140
  5. 335/140 simplified gives 67/28
  6. So, 35/20 + 18/28 = 67/28
    In mixed form: 211/28

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