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Add 45/84 and 21/56

45/84 + 21/56 is 51/56.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 56 is 168
  2. For the 1st fraction, since 84 × 2 = 168,
    45/84 = 45 × 2/84 × 2 = 90/168
  3. Likewise, for the 2nd fraction, since 56 × 3 = 168,
    21/56 = 21 × 3/56 × 3 = 63/168
  4. Add the two fractions:
    90/168 + 63/168 = 90 + 63/168 = 153/168
  5. After reducing the fraction, the answer is 51/56

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