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Add 72/20 and 54/72

1st number: 3 12/20, 2nd number: 54/72

72/20 + 54/72 is 87/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 20 × 18 = 360,
    72/20 = 72 × 18/20 × 18 = 1296/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    54/72 = 54 × 5/72 × 5 = 270/360
  4. Add the two like fractions:
    1296/360 + 270/360 = 1296 + 270/360 = 1566/360
  5. 1566/360 simplified gives 87/20
  6. So, 72/20 + 54/72 = 87/20
    In mixed form: 47/20

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