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Add 5/15 and 21/72

5/15 + 21/72 is 5/8.

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,
    5/15 = 5 × 24/15 × 24 = 120/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    21/72 = 21 × 5/72 × 5 = 105/360
  4. Add the two like fractions:
    120/360 + 105/360 = 120 + 105/360 = 225/360
  5. 225/360 simplified gives 5/8
  6. So, 5/15 + 21/72 = 5/8

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