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Add 15/9 and 81/40

1st number: 1 6/9, 2nd number: 2 1/40

15/9 + 81/40 is 443/120.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 40 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 9 × 40 = 360,
    15/9 = 15 × 40/9 × 40 = 600/360
  3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
    81/40 = 81 × 9/40 × 9 = 729/360
  4. Add the two like fractions:
    600/360 + 729/360 = 600 + 729/360 = 1329/360
  5. 1329/360 simplified gives 443/120
  6. So, 15/9 + 81/40 = 443/120
    In mixed form: 383/120

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