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Add 2/5 and 1/8

2/5 + 1/8 is 21/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 8 is 40
  2. For the 1st fraction, since 5 × 8 = 40,
    2/5 = 2 × 8/5 × 8 = 16/40
  3. Likewise, for the 2nd fraction, since 8 × 5 = 40,
    1/8 = 1 × 5/8 × 5 = 5/40
  4. Add the two fractions:
    16/40 + 5/40 = 16 + 5/40 = 21/40

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