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Add 75/20 and 21/9

1st number: 3 15/20, 2nd number: 2 3/9

75/20 + 21/9 is 73/12.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 9 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 20 × 9 = 180,
    75/20 = 75 × 9/20 × 9 = 675/180
  3. Likewise, for the 2nd fraction, since 9 × 20 = 180,
    21/9 = 21 × 20/9 × 20 = 420/180
  4. Add the two like fractions:
    675/180 + 420/180 = 675 + 420/180 = 1095/180
  5. 1095/180 simplified gives 73/12
  6. So, 75/20 + 21/9 = 73/12
    In mixed form: 61/12

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