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Add 1/15 and 28/40

1/15 + 28/40 is 23/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 40 is 120
  2. For the 1st fraction, since 15 × 8 = 120,
    1/15 = 1 × 8/15 × 8 = 8/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    28/40 = 28 × 3/40 × 3 = 84/120
  4. Add the two fractions:
    8/120 + 84/120 = 8 + 84/120 = 92/120
  5. After reducing the fraction, the answer is 23/30

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