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Add 90/16 and 21/20

1st number: 5 10/16, 2nd number: 1 1/20

90/16 + 21/20 is 267/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 20 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 16 × 5 = 80,
    90/16 = 90 × 5/16 × 5 = 450/80
  3. Likewise, for the 2nd fraction, since 20 × 4 = 80,
    21/20 = 21 × 4/20 × 4 = 84/80
  4. Add the two like fractions:
    450/80 + 84/80 = 450 + 84/80 = 534/80
  5. 534/80 simplified gives 267/40
  6. So, 90/16 + 21/20 = 267/40
    In mixed form: 627/40

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