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Add 21/15 and 7/72

1st number: 1 6/15, 2nd number: 7/72

21/15 + 7/72 is 539/360.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 15 × 24 = 360,
    21/15 = 21 × 24/15 × 24 = 504/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    7/72 = 7 × 5/72 × 5 = 35/360
  4. Add the two like fractions:
    504/360 + 35/360 = 504 + 35/360 = 539/360
  5. So, 21/15 + 7/72 = 539/360
    In mixed form: 1179/360

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