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Add 21/30 and 45/56

21/30 + 45/56 is 421/280.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 56 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 30 × 28 = 840,
    21/30 = 21 × 28/30 × 28 = 588/840
  3. Likewise, for the 2nd fraction, since 56 × 15 = 840,
    45/56 = 45 × 15/56 × 15 = 675/840
  4. Add the two like fractions:
    588/840 + 675/840 = 588 + 675/840 = 1263/840
  5. 1263/840 simplified gives 421/280
  6. So, 21/30 + 45/56 = 421/280
    In mixed form: 1141/280

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