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Add 21/4 and 45/5

1st number: 5 1/4, 2nd number: 9 0/5

21/4 + 45/5 is 57/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 5 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 4 × 5 = 20,
    21/4 = 21 × 5/4 × 5 = 105/20
  3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
    45/5 = 45 × 4/5 × 4 = 180/20
  4. Add the two like fractions:
    105/20 + 180/20 = 105 + 180/20 = 285/20
  5. 285/20 simplified gives 57/4
  6. So, 21/4 + 45/5 = 57/4
    In mixed form: 141/4

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