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Add 21/75 and 4/45

21/75 + 4/45 is 83/225.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 45 is 225
  2. For the 1st fraction, since 75 × 3 = 225,
    21/75 = 21 × 3/75 × 3 = 63/225
  3. Likewise, for the 2nd fraction, since 45 × 5 = 225,
    4/45 = 4 × 5/45 × 5 = 20/225
  4. Add the two fractions:
    63/225 + 20/225 = 63 + 20/225 = 83/225
  5. So, 21/75 + 4/45 = 83/225

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