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Add 16/21 and 1/25

16/21 + 1/25 is 421/525.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 25 is 525
  2. For the 1st fraction, since 21 × 25 = 525,
    16/21 = 16 × 25/21 × 25 = 400/525
  3. Likewise, for the 2nd fraction, since 25 × 21 = 525,
    1/25 = 1 × 21/25 × 21 = 21/525
  4. Add the two fractions:
    400/525 + 21/525 = 400 + 21/525 = 421/525

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