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Add 90/16 and 21/4

1st number: 5 10/16, 2nd number: 5 1/4

90/16 + 21/4 is 87/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 16 and 4 is 16

    Next, find the equivalent fraction of both fractional numbers with denominator 16
  2. For the 1st fraction, since 16 × 1 = 16,
    90/16 = 90 × 1/16 × 1 = 90/16
  3. Likewise, for the 2nd fraction, since 4 × 4 = 16,
    21/4 = 21 × 4/4 × 4 = 84/16
  4. Add the two like fractions:
    90/16 + 84/16 = 90 + 84/16 = 174/16
  5. 174/16 simplified gives 87/8
  6. So, 90/16 + 21/4 = 87/8
    In mixed form: 107/8

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