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Add 10/20 and 9/8

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

10/20 + 9/8 is 13/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 8 is 40
  2. For the 1st fraction, since 20 × 2 = 40,
    10/20 = 10 × 2/20 × 2 = 20/40
  3. Likewise, for the 2nd fraction, since 8 × 5 = 40,
    9/8 = 9 × 5/8 × 5 = 45/40
  4. Add the two fractions:
    20/40 + 45/40 = 20 + 45/40 = 65/40
  5. After reducing the fraction, the answer is 13/8
  6. In mixed form: 15/8

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