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Add 10/20 and 9/28

10/20 + 9/28 is 23/28.

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,
    10/20 = 10 × 7/20 × 7 = 70/140
  3. Likewise, for the 2nd fraction, since 28 × 5 = 140,
    9/28 = 9 × 5/28 × 5 = 45/140
  4. Add the two fractions:
    70/140 + 45/140 = 70 + 45/140 = 115/140
  5. 115/140 simplified gives 23/28
  6. So, 10/20 + 9/28 = 23/28

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