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Add 20/15 and 84/72

1st number: 1 5/15, 2nd number: 1 12/72

20/15 + 84/72 is 5/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 72 is 360
  2. For the 1st fraction, since 15 × 24 = 360,
    20/15 = 20 × 24/15 × 24 = 480/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    84/72 = 84 × 5/72 × 5 = 420/360
  4. Add the two fractions:
    480/360 + 420/360 = 480 + 420/360 = 900/360
  5. 900/360 simplified gives 5/2
  6. So, 20/15 + 84/72 = 5/2
    In mixed form: 21/2

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