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Add 21/5 and 45/16

1st number: 4 1/5, 2nd number: 2 13/16

21/5 + 45/16 is 561/80.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 16 is 80
  2. For the 1st fraction, since 5 × 16 = 80,
    21/5 = 21 × 16/5 × 16 = 336/80
  3. Likewise, for the 2nd fraction, since 16 × 5 = 80,
    45/16 = 45 × 5/16 × 5 = 225/80
  4. Add the two fractions:
    336/80 + 225/80 = 336 + 225/80 = 561/80
  5. So, 21/5 + 45/16 = 561/80
    In mixed form: 71/80

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