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Add 1/28 and 20/45

1/28 + 20/45 is 121/252.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 45 is 1260
  2. For the 1st fraction, since 28 × 45 = 1260,
    1/28 = 1 × 45/28 × 45 = 45/1260
  3. Likewise, for the 2nd fraction, since 45 × 28 = 1260,
    20/45 = 20 × 28/45 × 28 = 560/1260
  4. Add the two fractions:
    45/1260 + 560/1260 = 45 + 560/1260 = 605/1260
  5. After reducing the fraction, the answer is 121/252

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