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Add 18/2 and 21/40

1st number: 9 0/2, 2nd number: 21/40

18/2 + 21/40 is 381/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 40 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 2 × 20 = 40,
    18/2 = 18 × 20/2 × 20 = 360/40
  3. Likewise, for the 2nd fraction, since 40 × 1 = 40,
    21/40 = 21 × 1/40 × 1 = 21/40
  4. Add the two like fractions:
    360/40 + 21/40 = 360 + 21/40 = 381/40
  5. So, 18/2 + 21/40 = 381/40
    In mixed form: 921/40

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