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Add 3/20 and 21/30

3/20 + 21/30 is 17/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 30 is 60
  2. For the 1st fraction, since 20 × 3 = 60,
    3/20 = 3 × 3/20 × 3 = 9/60
  3. Likewise, for the 2nd fraction, since 30 × 2 = 60,
    21/30 = 21 × 2/30 × 2 = 42/60
  4. Add the two fractions:
    9/60 + 42/60 = 9 + 42/60 = 51/60
  5. 51/60 simplified gives 17/20
  6. So, 3/20 + 21/30 = 17/20

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