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Add 81/8 and 8/20

1st number: 10 1/8, 2nd number: 8/20

81/8 + 8/20 is 421/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 20 is 40
  2. For the 1st fraction, since 8 × 5 = 40,
    81/8 = 81 × 5/8 × 5 = 405/40
  3. Likewise, for the 2nd fraction, since 20 × 2 = 40,
    8/20 = 8 × 2/20 × 2 = 16/40
  4. Add the two fractions:
    405/40 + 16/40 = 405 + 16/40 = 421/40
  5. So, 81/8 + 8/20 = 421/40
    In mixed form: 1021/40

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