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Add 80/15 and 21/54

1st number: 5 5/15, 2nd number: 21/54

80/15 + 21/54 is 103/18.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 54 is 270

    Next, find the equivalent fraction of both fractional numbers with denominator 270
  2. For the 1st fraction, since 15 × 18 = 270,
    80/15 = 80 × 18/15 × 18 = 1440/270
  3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
    21/54 = 21 × 5/54 × 5 = 105/270
  4. Add the two like fractions:
    1440/270 + 105/270 = 1440 + 105/270 = 1545/270
  5. 1545/270 simplified gives 103/18
  6. So, 80/15 + 21/54 = 103/18
    In mixed form: 513/18

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