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Add 18/40 and 5/4

1st number: 18/40, 2nd number: 1 1/4

18/40 + 5/4 is 17/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 4 is 40
  2. For the 1st fraction, since 40 × 1 = 40,
    18/40 = 18 × 1/40 × 1 = 18/40
  3. Likewise, for the 2nd fraction, since 4 × 10 = 40,
    5/4 = 5 × 10/4 × 10 = 50/40
  4. Add the two fractions:
    18/40 + 50/40 = 18 + 50/40 = 68/40
  5. 68/40 simplified gives 17/10
  6. So, 18/40 + 5/4 = 17/10
    In mixed form: 17/10

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