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Add 14/21 and 21/45

14/21 + 21/45 is 17/15.

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,
    14/21 = 14 × 15/21 × 15 = 210/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    21/45 = 21 × 7/45 × 7 = 147/315
  4. Add the two fractions:
    210/315 + 147/315 = 210 + 147/315 = 357/315
  5. After reducing the fraction, the answer is 17/15
  6. In mixed form: 12/15

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