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Add 15/10 and 81/72

1st number: 1 5/10, 2nd number: 1 9/72

15/10 + 81/72 is 21/8.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 10 × 36 = 360,
    15/10 = 15 × 36/10 × 36 = 540/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    81/72 = 81 × 5/72 × 5 = 405/360
  4. Add the two like fractions:
    540/360 + 405/360 = 540 + 405/360 = 945/360
  5. 945/360 simplified gives 21/8
  6. So, 15/10 + 81/72 = 21/8
    In mixed form: 25/8

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