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Add 15/20 and 9/56

15/20 + 9/56 is 51/56.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 56 is 280
  2. For the 1st fraction, since 20 × 14 = 280,
    15/20 = 15 × 14/20 × 14 = 210/280
  3. Likewise, for the 2nd fraction, since 56 × 5 = 280,
    9/56 = 9 × 5/56 × 5 = 45/280
  4. Add the two fractions:
    210/280 + 45/280 = 210 + 45/280 = 255/280
  5. 255/280 simplified gives 51/56
  6. So, 15/20 + 9/56 = 51/56

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