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Add 27/40 and 15/30

27/40 + 15/30 is 47/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 30 is 120

    Next, find the equivalent fraction of both fractional numbers with denominator 120
  2. For the 1st fraction, since 40 × 3 = 120,
    27/40 = 27 × 3/40 × 3 = 81/120
  3. Likewise, for the 2nd fraction, since 30 × 4 = 120,
    15/30 = 15 × 4/30 × 4 = 60/120
  4. Add the two like fractions:
    81/120 + 60/120 = 81 + 60/120 = 141/120
  5. 141/120 simplified gives 47/40
  6. So, 27/40 + 15/30 = 47/40
    In mixed form: 17/40

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