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Add 18/72 and 16/20

18/72 + 16/20 is 21/20.

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,
    18/72 = 18 × 5/72 × 5 = 90/360
  3. Likewise, for the 2nd fraction, since 20 × 18 = 360,
    16/20 = 16 × 18/20 × 18 = 288/360
  4. Add the two like fractions:
    90/360 + 288/360 = 90 + 288/360 = 378/360
  5. 378/360 simplified gives 21/20
  6. So, 18/72 + 16/20 = 21/20
    In mixed form: 11/20

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