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Add 45/54 and 15/20

45/54 + 15/20 is 19/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 20 is 540

    Next, find the equivalent fraction of both fractional numbers with denominator 540
  2. For the 1st fraction, since 54 × 10 = 540,
    45/54 = 45 × 10/54 × 10 = 450/540
  3. Likewise, for the 2nd fraction, since 20 × 27 = 540,
    15/20 = 15 × 27/20 × 27 = 405/540
  4. Add the two like fractions:
    450/540 + 405/540 = 450 + 405/540 = 855/540
  5. 855/540 simplified gives 19/12
  6. So, 45/54 + 15/20 = 19/12
    In mixed form: 17/12

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