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Add 9/4 and 8/5

1st number: 2 1/4, 2nd number: 1 3/5

9/4 + 8/5 is 77/20.

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,
    9/4 = 9 × 5/4 × 5 = 45/20
  3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
    8/5 = 8 × 4/5 × 4 = 32/20
  4. Add the two fractions:
    45/20 + 32/20 = 45 + 32/20 = 77/20
  5. In mixed form: 317/20

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