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Add 35/21 and 42/45

1st number: 1 14/21, 2nd number: 42/45

35/21 + 42/45 is 13/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 45 is 315
  2. For the 1st fraction, since 21 × 15 = 315,
    35/21 = 35 × 15/21 × 15 = 525/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    42/45 = 42 × 7/45 × 7 = 294/315
  4. Add the two fractions:
    525/315 + 294/315 = 525 + 294/315 = 819/315
  5. After reducing the fraction, the answer is 13/5
  6. In mixed form: 23/5

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