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Add 1/4 and 3/5

1/4 + 3/5 is 17/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 5 is 20
  2. For the 1st fraction, since 4 × 5 = 20,
    1/4 = 1 × 5/4 × 5 = 5/20
  3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
    3/5 = 3 × 4/5 × 4 = 12/20
  4. Add the two fractions:
    5/20 + 12/20 = 5 + 12/20 = 17/20

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