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Add 15/21 and 30/25

1st number: 15/21, 2nd number: 1 5/25

15/21 + 30/25 is 67/35.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 25 is 525

    Next, find the equivalent fraction of both fractional numbers with denominator 525
  2. For the 1st fraction, since 21 × 25 = 525,
    15/21 = 15 × 25/21 × 25 = 375/525
  3. Likewise, for the 2nd fraction, since 25 × 21 = 525,
    30/25 = 30 × 21/25 × 21 = 630/525
  4. Add the two like fractions:
    375/525 + 630/525 = 375 + 630/525 = 1005/525
  5. 1005/525 simplified gives 67/35
  6. So, 15/21 + 30/25 = 67/35
    In mixed form: 132/35

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