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Add 21/45 and 9/56

21/45 + 9/56 is 527/840.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 56 is 2520

    Next, find the equivalent fraction of both fractional numbers with denominator 2520
  2. For the 1st fraction, since 45 × 56 = 2520,
    21/45 = 21 × 56/45 × 56 = 1176/2520
  3. Likewise, for the 2nd fraction, since 56 × 45 = 2520,
    9/56 = 9 × 45/56 × 45 = 405/2520
  4. Add the two like fractions:
    1176/2520 + 405/2520 = 1176 + 405/2520 = 1581/2520
  5. 1581/2520 simplified gives 527/840
  6. So, 21/45 + 9/56 = 527/840

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