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Add 28/30 and 20/72

28/30 + 20/72 is 109/90.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 72 is 360
  2. For the 1st fraction, since 30 × 12 = 360,
    28/30 = 28 × 12/30 × 12 = 336/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    20/72 = 20 × 5/72 × 5 = 100/360
  4. Add the two fractions:
    336/360 + 100/360 = 336 + 100/360 = 436/360
  5. After reducing the fraction, the answer is 109/90
  6. In mixed form: 119/90

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