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Add 1/20 and 12/63

1/20 + 12/63 is 101/420.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 63 is 1260
  2. For the 1st fraction, since 20 × 63 = 1260,
    1/20 = 1 × 63/20 × 63 = 63/1260
  3. Likewise, for the 2nd fraction, since 63 × 20 = 1260,
    12/63 = 12 × 20/63 × 20 = 240/1260
  4. Add the two fractions:
    63/1260 + 240/1260 = 63 + 240/1260 = 303/1260
  5. 303/1260 simplified gives 101/420
  6. So, 1/20 + 12/63 = 101/420

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