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Add 15/48 and 21/45

15/48 + 21/45 is 187/240.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 48 and 45 is 720
  2. For the 1st fraction, since 48 × 15 = 720,
    15/48 = 15 × 15/48 × 15 = 225/720
  3. Likewise, for the 2nd fraction, since 45 × 16 = 720,
    21/45 = 21 × 16/45 × 16 = 336/720
  4. Add the two fractions:
    225/720 + 336/720 = 225 + 336/720 = 561/720
  5. After reducing the fraction, the answer is 187/240

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