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Add 45/60 and 21/56

45/60 + 21/56 is 9/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 60 and 56 is 840
  2. For the 1st fraction, since 60 × 14 = 840,
    45/60 = 45 × 14/60 × 14 = 630/840
  3. Likewise, for the 2nd fraction, since 56 × 15 = 840,
    21/56 = 21 × 15/56 × 15 = 315/840
  4. Add the two fractions:
    630/840 + 315/840 = 630 + 315/840 = 945/840
  5. After reducing the fraction, the answer is 9/8
  6. In mixed form: 11/8

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