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Add 21/80 and 28/10

1st number: 21/80, 2nd number: 2 8/10

21/80 + 28/10 is 49/16.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 10 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 80 × 1 = 80,
    21/80 = 21 × 1/80 × 1 = 21/80
  3. Likewise, for the 2nd fraction, since 10 × 8 = 80,
    28/10 = 28 × 8/10 × 8 = 224/80
  4. Add the two like fractions:
    21/80 + 224/80 = 21 + 224/80 = 245/80
  5. 245/80 simplified gives 49/16
  6. So, 21/80 + 28/10 = 49/16
    In mixed form: 31/16

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