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Add 21/16 and 45/12

1st number: 1 5/16, 2nd number: 3 9/12

21/16 + 45/12 is 81/16.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 12 is 48

    Next, find the equivalent fraction of both fractional numbers with denominator 48
  2. For the 1st fraction, since 16 × 3 = 48,
    21/16 = 21 × 3/16 × 3 = 63/48
  3. Likewise, for the 2nd fraction, since 12 × 4 = 48,
    45/12 = 45 × 4/12 × 4 = 180/48
  4. Add the two like fractions:
    63/48 + 180/48 = 63 + 180/48 = 243/48
  5. 243/48 simplified gives 81/16
  6. So, 21/16 + 45/12 = 81/16
    In mixed form: 51/16

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