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Add 21/4 and 30/25

1st number: 5 1/4, 2nd number: 1 5/25

21/4 + 30/25 is 129/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 25 is 100

    Next, find the equivalent fraction of both fractional numbers with denominator 100
  2. For the 1st fraction, since 4 × 25 = 100,
    21/4 = 21 × 25/4 × 25 = 525/100
  3. Likewise, for the 2nd fraction, since 25 × 4 = 100,
    30/25 = 30 × 4/25 × 4 = 120/100
  4. Add the two like fractions:
    525/100 + 120/100 = 525 + 120/100 = 645/100
  5. 645/100 simplified gives 129/20
  6. So, 21/4 + 30/25 = 129/20
    In mixed form: 69/20

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