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Add 15/56 and 12/45

15/56 + 12/45 is 449/840.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 45 is 2520
  2. For the 1st fraction, since 56 × 45 = 2520,
    15/56 = 15 × 45/56 × 45 = 675/2520
  3. Likewise, for the 2nd fraction, since 45 × 56 = 2520,
    12/45 = 12 × 56/45 × 56 = 672/2520
  4. Add the two fractions:
    675/2520 + 672/2520 = 675 + 672/2520 = 1347/2520
  5. 1347/2520 simplified gives 449/840
  6. So, 15/56 + 12/45 = 449/840

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