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Add 15/20 and 54/28

1st number: 15/20, 2nd number: 1 26/28

15/20 + 54/28 is 75/28.

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,
    15/20 = 15 × 7/20 × 7 = 105/140
  3. Likewise, for the 2nd fraction, since 28 × 5 = 140,
    54/28 = 54 × 5/28 × 5 = 270/140
  4. Add the two fractions:
    105/140 + 270/140 = 105 + 270/140 = 375/140
  5. After reducing the fraction, the answer is 75/28
  6. In mixed form: 219/28

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