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Add 9/10 and 21/4

1st number: 9/10, 2nd number: 5 1/4

9/10 + 21/4 is 123/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 4 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 10 × 2 = 20,
    9/10 = 9 × 2/10 × 2 = 18/20
  3. Likewise, for the 2nd fraction, since 4 × 5 = 20,
    21/4 = 21 × 5/4 × 5 = 105/20
  4. Add the two like fractions:
    18/20 + 105/20 = 18 + 105/20 = 123/20
  5. So, 9/10 + 21/4 = 123/20
    In mixed form: 63/20

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