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Add 1/20 and 18/63

1/20 + 18/63 is 47/140.

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,
    18/63 = 18 × 20/63 × 20 = 360/1260
  4. Add the two fractions:
    63/1260 + 360/1260 = 63 + 360/1260 = 423/1260
  5. 423/1260 simplified gives 47/140
  6. So, 1/20 + 18/63 = 47/140

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