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Add 10/15 and 20/72

10/15 + 20/72 is 17/18.

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,
    10/15 = 10 × 24/15 × 24 = 240/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    20/72 = 20 × 5/72 × 5 = 100/360
  4. Add the two like fractions:
    240/360 + 100/360 = 240 + 100/360 = 340/360
  5. 340/360 simplified gives 17/18
  6. So, 10/15 + 20/72 = 17/18

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