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Add 1/28 and 9/20

1/28 + 9/20 is 17/35.

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,
    1/28 = 1 × 5/28 × 5 = 5/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    9/20 = 9 × 7/20 × 7 = 63/140
  4. Add the two fractions:
    5/140 + 63/140 = 5 + 63/140 = 68/140
  5. After reducing the fraction, the answer is 17/35

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