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Add 72/20 and 80/6

1st number: 3 12/20, 2nd number: 13 2/6

72/20 + 80/6 is 254/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 6 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 20 × 3 = 60,
    72/20 = 72 × 3/20 × 3 = 216/60
  3. Likewise, for the 2nd fraction, since 6 × 10 = 60,
    80/6 = 80 × 10/6 × 10 = 800/60
  4. Add the two like fractions:
    216/60 + 800/60 = 216 + 800/60 = 1016/60
  5. 1016/60 simplified gives 254/15
  6. So, 72/20 + 80/6 = 254/15
    In mixed form: 1614/15

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