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Add 1/20 and 63/84

1/20 + 63/84 is 4/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 84 is 420
  2. For the 1st fraction, since 20 × 21 = 420,
    1/20 = 1 × 21/20 × 21 = 21/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    63/84 = 63 × 5/84 × 5 = 315/420
  4. Add the two fractions:
    21/420 + 315/420 = 21 + 315/420 = 336/420
  5. After reducing the fraction, the answer is 4/5

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