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Add 3/72 and 21/20

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

3/72 + 21/20 is 131/120.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 72 × 5 = 360,
    3/72 = 3 × 5/72 × 5 = 15/360
  3. Likewise, for the 2nd fraction, since 20 × 18 = 360,
    21/20 = 21 × 18/20 × 18 = 378/360
  4. Add the two like fractions:
    15/360 + 378/360 = 15 + 378/360 = 393/360
  5. 393/360 simplified gives 131/120
  6. So, 3/72 + 21/20 = 131/120
    In mixed form: 111/120

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