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Add 28/15 and 21/72

1st number: 1 13/15, 2nd number: 21/72

28/15 + 21/72 is 259/120.

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,
    28/15 = 28 × 24/15 × 24 = 672/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    21/72 = 21 × 5/72 × 5 = 105/360
  4. Add the two like fractions:
    672/360 + 105/360 = 672 + 105/360 = 777/360
  5. 777/360 simplified gives 259/120
  6. So, 28/15 + 21/72 = 259/120
    In mixed form: 219/120

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