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Add 15/28 and 54/72

15/28 + 54/72 is 9/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 72 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 28 × 18 = 504,
    15/28 = 15 × 18/28 × 18 = 270/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    54/72 = 54 × 7/72 × 7 = 378/504
  4. Add the two like fractions:
    270/504 + 378/504 = 270 + 378/504 = 648/504
  5. 648/504 simplified gives 9/7
  6. So, 15/28 + 54/72 = 9/7
    In mixed form: 12/7

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